GrowSpan 108207 User manual

GROWSPAN™SINGLE BAY HIGH TUNNELS
1
Revision date: 04.08.16
STK# DIMENSIONS
108207 28' x 56'
108208 28' x 105'
108209 28' x 154'
108210 28' x 203'
Actual building may differ from what is shown above.
©2016 GrowSpan
All Rights Reserved. Reproduction
is prohibited without permission.
GrowSpan™ Single Bay High Tunnels

GROWSPAN™SINGLE BAY HIGH TUNNELS
2Revision date: 04.08.16
YOU MUST READ THIS DOCUMENT BEFORE YOU
BEGIN TO ASSEMBLE THE SHELTER.
Thank you for purchasing this GrowSpan™ high tunnel.
When properly assembled and maintained, this product will
provide years of reliable service. These instructions include
helpful hints and important information needed to safely
assemble and properly maintain the high tunnel. Please
read these instructions before you begin.
If you have any questions during the assembly, contact
Customer Service for assistance.
SAFETY PRECAUTIONS
• Wear eye protection.
• Wear head protection.
• Wear gloves when handling metal tubes.
• Use a portable GFCI (Ground Fault Circuit Interrupter)
when working with power tools and cords.
• Do not climb on the high tunnel or framing during or
after construction.
• Do not occupy the high tunnel during high winds,
tornadoes, or hurricanes.
• Provide adequate ventilation if the structure is
enclosed.
• Do not store hazardous materials in the high tunnel.
• Provide proper ingress and egress to prevent
entrapment.
ANCHORING INSTRUCTIONS
Prior to assembling this high tunnel, please read the MUST
READ document included with the shipment.
WARNING: The anchor assembly is an integral part of
the high tunnel construction. Improper anchoring may
cause high tunnel instability and failure of the structure.
Failing to anchor the high tunnel properly will void the
manufacturer’s warranty and may cause serious injury
and damage.
LOCATION
Choosing the proper location is an important step before
you begin to assemble the structure.
The following suggestions and precautions will help you
determine whether your selected location is the best
location.
• Never erect the structure under power lines.
• Identify whether underground cables and pipes are
present before preparing the site or anchoring the
structure.
• Location should be away from structures that could
cause snow to drift on or around the building.
• Do not position the high tunnel where large loads
such as snow and ice, large tree branches, or other
overhead obstacles could fall.
SITE
After choosing a location, proper preparation of the site is
essential. Follow the information below.
• A level site is required. The site must be level to
properly and safely erect and anchor the structure.
• For sites that are not concrete or gravel, placing wood
blocks or other suitable supports under each rafter leg
helps prevent the pipes from sinking or working into the
site. Does not apply to frames with ground posts.
• Drainage: Water draining off the structure and from
areas surrounding the site should drain away from the
site to prevent damage to the site, the structure, and
contents of the structure.
WARNING: The individuals assembling this structure
are responsible for designing and furnishing all
temporary bracing, shoring and support needed during
the assembly process. For safety reasons, those who
are not familiar with recognized construction methods
and techniques must seek the help of a qualified
contractor.

GROWSPAN™SINGLE BAY HIGH TUNNELS
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ASSEMBLY PROCEDURE
Following the instructions as presented will help ensure the
proper assembly of your high tunnel. Failing to follow these
steps may result in an improperly assembled and anchored
high tunnel and will void all warranty and protection the
owner is entitled.
The steps outlining the assembly process are as follows:
1. Verify that all parts are included in the shipment. Notify
Customer Service for questions or concerns.
2. Read these instructions, the Must Read document, and
all additional documentation included with the shipment
before you begin assembling the high tunnel.
3. Gather the tools, bracing, ladders (and lifts), and
assistance needed to assemble the high tunnel.
4. Check the weather before you install the roof cover
and any panels (if equipped). Do not install covers or
panels on a windy or stormy day.
5. Re-evaluate the location and site based on the
information and precautions presented in the
documentation included with the shipment.
6. Prepare the site (if applicable).
7. Assemble the frame components in the order they are
presented in these instructions.
8. Assemble the frame including the struts (if equipped).
9. Consult the MUST READ document and properly
anchor the assembled frame.
10. Install, tighten, and secure the main cover (if equipped).
This applies to film and fabric covers that stretch over
the frame assembly. Install end panels and doors if
equipped.
11. Read the care and maintenance information at the end
of these instructions.
12. Complete and return all warranty information as
instructed.
LIST OF WORDS AND PHRASES
Before you begin, it is important to become familiar with the
words and phrases used in this instruction manual.
These words and phrases are common to most
GrowSpan™ shelters and identify the different parts of
the shelter. (Some are used in this document. Others may
not apply to this particular shelter.) These terms describe
the shipped parts and can also be found on the materials
list/spec sheets included with the shipment. To aid in the
assembly, read through the following definitions before you
begin to assemble your shelter.
• Conduit: An assembly of pipes used to secure the
main cover and end panels (if equipped). Purlins and
some strut assemblies also consist of connected pipes
to form a conduit. Each pipe joint of a conduit assembly
is secured with a self-tapping Tek screw.
• Coupler or Fitting: A part of the frame assembly
where legs, purlins and rafter pipes are inserted and
secured. In most instances, 3-way and 4-way couplers
are used. In some larger applications, couplers are
used to secure the joints of the different rafter sections
during the assembly of the rafters. Some shelters do
not use couplers.
• Foot or Rafter Foot: The part attached to and found
at the base of the rafter or leg of the shelter.
Depending on the shelter, the foot is an optional
purchase. Some shelters do not offer an optional foot.
Some use 1-way connectors or ground posts.
• Must Read Document: This document includes
building and shelter anchoring instructions, steps for
end wall reinforcement, safety precautions, and notices
and warnings. The Must Read document is sent with
all shelters and buildings. If you did not receive a Must
Read document, contact Customer Service to request
one.
• On-Center: Term used to describe a measurement
taken from the vertical center of the rafter or frame
member to the vertical center of another.
• Purlin: The pipe assembly that runs perpendicular to
the rafters or framework that supports the main cover.
Purlins are found on the sides and roof areas of the
assembled frame, are evenly spaced, and typically run
from the front to the back of the shelter.
• Plain or Straight Pipe: A term used to describe a pipe
that has the same diameter or width throughout its
entire length.
• Strut: A strut is usually a length of pipe with two
flattened ends and is used for diagonal bracing of the
shelter frame. A strut is typically secured to the frame
work by special brackets and bolts.
• Swaged End or Swaged Pipe: The term “swaged''
refers to the tapered end of the pipe or tube. Swaged
ends of a pipe can be inserted into couplers and the
straight ends of other pipes.
• Tek Screw: A self-tapping fastener used to secure pipe
joints and to fasten brackets to rafters.

GROWSPAN™SINGLE BAY HIGH TUNNELS
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The following graphics and photos will help you identify the
different parts and show you how they are used. (Some
parts are not shown.)
CC6212 and
CC6214
Fabric Clips
FA4482B
Tek Screw
Swaged
Plain
Swaged and Plain Rafter Sections
102676
Ground Post 102857
End Clamp
102547
Cross Connector
102921
Neo-Bonded
Washers
REQUIRED TOOLS
The following list identifies the main tools needed to
assemble the shelter. Additional tools and supports may be
needed depending on the structure, location, and
application.
• Tape measure or measuring device
• Fine point marker to mark the location on tubing
• Variable speed drill and impact driver (cordless with
extra batteries works best)
• Wrench, ratchet and socket (recommended)
• Ropes long enough to reach over the frame
• Hammers and gloves
• Metal file
• Duct tape
• Box cutter or utility knife
• Ladders, work platforms, and other machinery for lifting
designed to work safely at the height of the frame
UNPACK AND IDENTIFY PARTS
The following steps will ensure that you have all the
necessary parts before you begin to assemble the shelter
frame.
1. Unpack the contents of the shipment and place where
you can easily inventory the parts. Refer to the Bill of
Materials/Spec Sheets.
2. Verify that all parts listed on the Bill of Materials/Spec
Sheets are present. If anything is missing or you have
questions, consult the Pictorial Parts Guide and all
diagrams for clarification, or contact Customer Service.
NOTE: At this time, you do not need to open the plastic
bags containing smaller parts such as fasteners or
washers (if equipped).
Customer-Supplied Materials
This shelter requires additional materials to complete the
assembly of the end frame. These materials are chosen
and supplied by the customer. Fasteners, brackets, and
door hardware are included. Refer to the diagrams in the
Quick Start section near the back of this guide for details.
The diagrams show 4" x 4" posts as the recommended
customer-supplied supports needed to complete the end
frames of the high tunnel.

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Revision date: 04.08.16
The diagram below describes accessories available for your building and suggests ways to improve the stability of the
customer-supplied end framing. Contact your sales representative to purchase or to learn more about accessories.
SHELTER ACCESSORIES AND CONSTRUCTION SUGGESTIONS
Stay Cable System
The Stay Cable System provides additional support to the building
frame and customer-supplied end framing. When properly installed,
stay cables help stabilize the main frame and end wall frame,
especially in areas where strong winds are common.
Stay Cable Systems are shipped complete with cable, turnbuckles,
and all the necessary clamps to secure the cable to the building, end
frame, and ground anchors.
Contact your sales representative to learn more about the Stay
Cable System.
End Framing Installation
In areas where loose or sandy soil conditions are found or where
deep frost is common, setting the customer-supplied end frame
posts in concrete is recommended. This helps prevent shifting
and provides an additional level of stability in extreme climates
and during adverse weather-related conditions.
Always consult local and regional building codes and follow
construction practices common to the area when setting the
customer-supplied end frame posts.
End frame materials and concrete are supplied by the customer.
108196 Heavy Duty Weed Guard
Ground Cover
Premium, landscape quality, black 4.75
oz. woven needle-punched fabric is 30
mils thick and manufactured from UV-
resistant polypropylene.
The 108196 Heavy Duty Weed Guard
Ground Cover is 36" wide to provide
maximum weed prevention. Length is
determined by building.
ATTENTION: Construct the end wall frame
as shown with the vertical jambs extending
above the header 18" to 24". This provides
an anchor point for cables if you decide to
install them now or in the future.

GROWSPAN™SINGLE BAY HIGH TUNNELS
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LAY OUT THE BUILDING SITE
Taking these steps before assembling the shelter saves
time and ensures that the structure is positioned as
desired. The following steps describe one way to lay out
the site. Experienced contractors may elect to use their
own method of site preparation.
Drive ground posts to the proper depth. Width and length
of the shelter are measured from the center of one ground
post to the center of the remaining ground post. Consult
diagrams and details for additional information.
SQUARE THE SITE
Gather the parts:
• Ground posts
• 5/16" x 5" eye bolts
• 5/16" nuts
1. Identify a corner where a ground post will be positioned
and drive the first ground post into the ground.
NOTE: Insert the ground post driver into the top of the
ground post to protect the post and drive the post into
the ground. The top of the post will be 12" above the
finished grade when properly driven.
3. Use a transit or line level to set and drive the second
corner post to the same depth as the first ground post.
4. String a line at least as long as the building from the
first stake at 90°.
NOTE: A transit can be used to ensure an accurate 90°
angle, or the 3-4-5 rule can be used. Refer to diagram.
Using multiples of 3-4-5 such as 6-8-10 or 12-16-20
helps to maintain an accurate 90° angle.
5. After squaring the position of the building, measure the
length and drive the next corner ground post.
6. Repeat the same step for the last corner post.
NOTE: The distance measured diagonally between
corner posts must be equal for the building to be
square.
7. Check all dimensions (and adjust if needed) before
driving the remaining posts to the required height.
8. After all corner posts are accurately installed, tie a
string line between the tops of the corner ground posts
on the same side of the shelter. The string is used to
identify the tops of all remaining ground posts. The
string must remain tight and level.
9. Use a tape measure to mark the 84" on-center
locations of the remaining ground posts.
10. Drive the remaining ground posts into the ground at
the required 84" on-center dimension and to the height
identified by the string.
NOTE: Verify that the holes in the ground posts are in
the proper position and that each post is plumb and
driven to the correct depth.
11. Continue with the rafter assembly steps that follow.
ATTENTION: Position the pre-drilled holes facing to the
inside/outside of the shelter so they can be aligned with
the bolt holes in the rafter legs.
To align the bolt holes in the ground posts with those
in the rafter after driving the ground posts, insert a
tapered rod or pry bar into a ground post bolt hole and
turn the post using the rod or pry bar.
2. After the first corner ground post is in place, string a
line the width of the building (center-to-center) and
drive the second ground post into the ground just
enough to hold it in place.
Outside of
Shelter
Inside of
Shelter
Ground
Post

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Rafter Assembly Procedure (Consult Front Profile Diagram)
Each rafter assembly consists of six (6) rafter sections: four
(4) curved rafter pipes for the upper portion and two (2) leg
pipes that connect to the upper pipes. The lower two (2) leg
pipes are drilled to be anchored to the ground posts.
1. Select the six (6) pipes needed to assemble a rafter
and arrange these on a flat surface.
2. Slide the swaged portion of each rafter pipe into the
plain end of the pipe as shown.
3. With the main rafter pipes seated at each joint and the
rafter positioned on a flat surface, secure each joint
with a single self-tapping Tek screw. Position a Tek
screw approximately 1" from pipe joint.
ATTENTION: Install the screws so they will not touch
the cover once it is installed. This is typically on the
backside of the rafter, which will be the surface visible
from the inside of the high tunnel once the frame is
assembled.
END RAFTER ASSEMBLY
In addition to the steps in the previous procedure, complete
the following steps for the two (2) end rafters only.
1. Take one of the assembled rafters and place it on a flat
surface.
2. Slide one (1) end clamp (102857) onto the rafter and
position it at the peak of the rafter.
NOTE: Use a piece of duct tape (if desired) to keep
each clamp from sliding when the rafter is lifted into
position.
View shows the end rafter and clamp as seen from the
outside once the frame is assembled. Bolt and nut of
the clamp are to the inside of the assembled frame.
See Connection Details diagram near the back of this
guide.
3. Repeat the same procedure for the final end rafter and
set the two rafters aside for access.
4. Refer to the steps present on the following pages and
assemble as instructed using the diagrams near the
back of this guide.
RAFTER ASSEMBLY (CONTINUED)
ASSEMBLE THE HIGH TUNNEL FRAME COMPONENTS
NOTE: Assistance is required to assemble the high tunnel
frame. Lifts and ladders are also recommended.
BASIC RAFTER ASSEMBLY STEPS
Gather the parts:
• Rafter pipe (#28SS1901D)
• Rafter pipe (#28SS1902)
• Rafter pipe (#28SS1903)
• End clamps (102857) and Cross Connectors (102547)
• Tek screws and nut setter (3/8" x 2-9/16" magnetic)
Swaged Pipe
1˝
Swaged Pipe Tek Screw
4. Assemble rafters as described and continue with the
additional steps to complete the assembly of the two
(2) end rafters.

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MAIN STEPS TO ASSEMBLE THE SINGLE-BAY HIGH
TUNNEL AND ITS COMPONENTS
The general steps that follow suggest one way to assemble
the single-bay economy high tunnel. Building site, local
building codes, and other factors may require adjustments
to these steps. Consult the services of a qualified
contractor if you are not familiar with the construction of
similar structures.
ATTENTION: Use the diagrams near the end of this
guide to view details of the connections and component
placement.
Use these main steps as a guide to complete the
construction of the single-bay economy high tunnel.
1. Identify the location for the main frame and set the
ground posts.
2. Assemble the rafters for the main frame.
3. Set the first end rafter onto the first set of ground posts
and secure the rafter to the posts using the supplied
5/16" x 5" eye bolts and 5/16" nuts.
Brace the rafter in place using ropes or temporary
bracing. Do not allow the rafter to remain unsecured in
the ground posts.
ASSEMBLY SEQUENCE
These steps outline the suggested method of assembly.
Local codes, location, site specifics, and other factors may
require a different approach. Read through the following
steps and adjust as needed to safely assemble the shelter.
1. Prepare the site. See Page 5 for a suggested method.
2. Set ground posts for the frame.
3. Construct main frame.
4. Assemble and attach all end frames using the supplied
hardware and the customer-supplied support posts.
5. Cut and install all end wall end panels.
6. Install main cover film and ropes.
7. Install all roll-up end wall door panels.
SPECIAL ASSEMBLY NOTES
• Secure each 106755 bracket to the customer-supplied
4" x 4" header using a 104188B (1/2" x 5 1/2") bolt.
• Cut the FAK16 (3/8" threaded rod) to the required
length. Measure accurately to reduce waste.
• Use four (4) 3/8" nuts for each section of FAK16 (3/8"
threaded rod).
• End panel sections are cut from the DCC4931 bulk
curtain material.
• Secure each main cover film to the end rafters of each
bay using the CC6214 fabric clips and Tek screws.
• Evenly space fabric clips to secure main cover film. For
best results, do not space clips more than 5' apart.
• Tie ropes to the eye bolts of the frame.
Position the eye of each eye bolt to the outside of the
frame.
4. Set the next rafter onto the next set of ground posts
and secure using eye bolts and nuts.
Ground post
and rafter
secured
using eye
bolt.
Inside of the
frame.

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FRAME ASSEMBLY (CONTINUED)
Tek Screw
5. Assemble a purlin section using two (2) pieces of
1.315" pipe (131S075) and secure the joint using a Tek
screw. See Side Profile for purlin pipe identification.
Use plain pipe to finish purlin run.
6. Add purlin to frame, center purlin on frame, and secure
using 102857 and 102547 clamps.
Interior RafterEnd Rafter
7. Secure each clamp to the purlin and each clamp to
the rafter using a Tek screw. See the examples in the
diagrams that follow.
Actual rafter and purlin may differ.
8. Repeat the procedure to complete the assembly of the
single-bay economy high tunnel.
9. After assembling the frame, install the end frames
using the supplied hardware and customer-supplied
support posts.
ROLL-UP PANEL INSTALLATION (Part #QEDxxxxxx)
Before attaching the guide posts, attach each roll-up panel
to the customer-supplied end framing (4" x 4") using Tek
screws and neo-bonded washers. Complete these steps to
install the roll-up panel conduit and hardware.
1. Take one roll-up panel, move to one end of the frame,
and unfold the panel.
END FRAME ASSEMBLY
Use these steps to install the end wall supports and
connecting hardware.
1. Using the dimensions shown on the End Framing
Details diagram in the Quick Start section, set the
customer-supplied 4" x 4" posts.
NOTE: Use recognized construction practices when
setting the customer-supplied 4" x 4" posts.
2. After setting the posts, install the header. Consult the
Connections Details diagram in the Quick Start section.
3. Secure posts to end rafters as shown. Consult End
Framing diagrams in the Quick Start section for details.
NOTE: Do not exceed 8" when cutting the individual
lengths of rod from the bulk 3/8" threaded rod. Cut the
threaded rod after installation. To prevent conflicts with
the end panel, countersink the "head" of the threaded
rod so that it is below the surface of the customer-
supplied support.
4. Repeat the steps to install the support posts and
header for the remaining end wall.
5. Continue by installing the roll-up panel and guide posts.
Use two nuts
and one flat
washer on
each end of the
rod to secure
the connection.
1" deep
1"
diameter
CUTAWAY
SIDE VIEW
Countersunk
hole

GROWSPAN™SINGLE BAY HIGH TUNNELS
10 Revision date: 04.08.16
Install Tek
screws through
bracket and into
guide post to
secure the post.
Customer-
supplied support
Use 104188B
1/2" x 5 1/2"
bolt to secure
106755 bracket
to supports.
104188B
bolt
Position Roll-up Panel Pocket
at the bottom of the end panel.
Bottom of the
header.
2. With assistance, lift and center the panel into position
against the 4" x 4" end frame and attach the top to the
header using wood screws and neo-bonded washers.
NOTE: Verify that the lower edge of the panel is on the
ground before securing the upper edge to the header.
3. Install the guide posts and brackets over the roll-up
panel.
Roll-up
panel is
not shown.
Diagram shows
the guide post
and bracket
attached over
the roll-up panel.
ROLL-UP PANEL INSTALLATION (CONTINUED) 4. Use the pipe diagrams on the End Framing Details
diagram to assemble the crank up assembly.
5. Secure each splice using a Tek screw and cover the
Tek screw with duct tape to protect the panel pocket.
6. Insert the assembly into the panel pocket. Verify that
the assembly runs between the guide post and the
wooden support posts. Allow a few inches to extend
beyond the panel opposite the crank handle to keep
the conduit in place during operation.
7. With the assembly in the proper position, flip up the
skirt at the bottom of the panel to secure the conduit to
the end panel using the CC6212 fabric clips and Tek
screws. Divide the clips evenly between the panels and
space them evenly along each conduit.
8. Cut a vertical slice in the panel skirt to fit around the
lower guide post assembly bracket. Do not cut through
the end panel.
9. Test the roll-up panel.
NOTE: Verify that the 3/8" threaded rod that secures
the customer-supplied end frame to the end rafter is
sunk below the post surface (recommended) or has
been cut off and taped to protect the panel.
10. Repeat the steps for the remaining panel.
11. After installing the door hardware and brackets, attach
the end panel material to the end frame and end rafter.
END PANEL INSTALLATION
Consult the End Panel Location and Door Frame Panel
Location diagrams at the back of this manual to view the
areas that need to be covered with end panel material. Use
these steps to cut and attach the end panel material to the
end wall frame.
1. Measure the area of the end wall that needs to be
covered with end panels and cut a section from the
bulk material. Allow extra material for the best fit.
NOTE: Due to differences in construction methods and
customer-supplied support materials, the customer
determines the best way to prepare the bulk material
for installation.
2. Set the prepared end panel in place and attach it to
the end frame using wood screws and neo-bonded
washers. Attach it to the rafter using Tek screws and
neo-bonded washers (102921).
3. Repeat the steps to cut and attach the remaining end
panels to cover the remaining end wall.
4. Repeat these steps to cut and attach the door frame
panels.
5. After installing all end panel and door frame panel
sections, install the roll-up panel ropes.
Header

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INSTALL ROLL-UP PANEL ROPES
The roll-up panel ropes are laced through the roll-up panel.
These ropes wrap around hook lags that are screwed into
the sides of the door frame. When installed correctly, these
ropes help to keep the roll-up panel in place when it is fully
or partially closed. These steps describe one way to lace
the roll-up panel.
Gather the parts:
• Hook lags (#FAX120)
• Rope (#CC5505)
• Zipper extension pole (#CC2235)
1. Beginning on the outside of a door frame, attach a
hook lag between the first two grommet holes below
the bracket. Position the open end of the hook lag
towards the end panel.
IMPORTANT: Screw hook lags into the sides of the
door frame, not the front. Do not screw into the roll-up
panel.
2. Install a hook lag at every other grommet interval as
shown in the diagram below. Use five (5) hooks for
each side.
3. Tie a length of rope to the first grommet hole below the
guide post bracket, loop it around the first hook lag,
and lace it back through the next grommet. Repeat this
process until the rope is through the last grommet.
Tie rope tight to the
first grommet hole
below the bracket.
Hook lags
Grommet holes
4. Leaving some slack, loosely tie the rope off at the
bottom grommet hole.
5. Repeat steps 1 through 4 for the other side of the door
frame.
6. Once the ropes on both sides are laced and hooked
in the correct position, untie the rope at the bottom
grommet holes, pull tight to remove excess slack, and
tie off at the bottom grommet holes.
7. Repeat for the remaining end.
NOTE: Use the included zipper extension pole
(CC2235) to unhook the rope to open the roll-up panel.
The pole can also be used to loop the rope back onto
the hook lags when the roll-up panel is closed.
8. Install the main cover film.
White dashed line shows the rope
laced behind the roll-up panel.
TOP VIEW
Photo shows the open end of the hook lag
facing the end panels.
Door Frame
Guide post is
not shown.
QED Roll-
up Panel
Grommet
holes
Cover is not shown.
QED Roll-
up Panel

GROWSPAN™SINGLE BAY HIGH TUNNELS
12 Revision date: 04.08.16
MAIN COVER FILM INSTALLATION
Use the roll of film to cover the frame. Complete these
general steps to install the cover and retaining ropes.
DO NOT ATTEMPT TO PULL THE COVER DURING
WINDY CONDITIONS OR WHEN SUCH CONDITIONS
ARE EXPECTED.
1. With assistance, unroll the cover film along one side of
the frame on the outside.
2. Locate one edge of the film and pull the film up and
over the frame.
3. Stretch the film end-to-end and side-to-side evenly over
the frame. Approximately 12" of the film should extend
beyond each end rafter.
4. Attach each film end to each end rafter using the
CC6214 fabric clips and Tek screws.
NOTE: Evenly space the clips. To best secure the film,
do not space greater than 5' apart. Clips are removed
to open the cover and are re-installed when the cover
is closed. Creating a double-layered or triple-layered lip
using the excess film material at each end will help to
maintain a stronger edge for the clips.
5. With the film stretched and attached to the end rafters,
install the main cover rope.
NOTE: Install two (2) sections of rope between each
set of rafters. Tie ropes to the eye bolts of the frame.
Loosen each rope to push the film up toward the peak
of the frame to open the cover and then tighten the
rope to secure the cover. Consult the Rope Installation
Diagram near the back of this guide for pattern details.
6. With the cover and ropes installed, read the cover
information that follows and continue by reading the
Shelter Care and Maintenance section.
OPENING THE MAIN COVER FILM
Ropes and fabric clips hold the main cover film in place. To
open the cover, remove fabric clips from the end rafter and
push the film up toward the peak of the frame.
Loosen the ropes if needed to achieve the desired results.
Loosen only one pair of ropes at a time, push the cover
open, and retighten the ropes.
The film must remain attached to the end rafters with fabric
clips near the top when fully opened to prevent it from
blowing free. Never remove all fabric clips. Remove only
enough to allow the film to be opened to the desired height.
Frame shown may vary in length and design from the
actual frame. End framing is not shown.
Ropes may
not be needed.
Ropes
Cover Film SHELTER CARE AND MAINTENANCE
Proper care and maintenance of the shelter is important.
Check the following items periodically to properly maintain
the shelter:
• Regularly check the main cover film and panels (if
equipped) to see that these remain tight and in proper
repair. DO NOT LEAVE THE MAIN COVER FILM
UNSECURED. VERIFY THAT THE ROPES REMAIN
TIGHT AT ALL TIMES.
• Check connections and all fasteners to verify that they
remain tight.
• Do not climb or stand on the frame at anytime.
• Remove debris and objects that may accumulate on
the cover film. Use tools that will not damage the cover
when removing debris.
• Remove snow to prevent excess accumulation. Use
tools that will not damage the cover when removing
snow.
• Check the contents of the high tunnel to verify that
nothing is touching the cover or the side panels that
could cause damage.
• Check the anchoring system to ensure that all
components are tight and in good repair.
• Verify that the anti-billow ropes are tight and in good
condition. Replace ropes as needed.
• Replace worn or damaged parts immediately.
• If the shelter is moved, inspect all parts and
connections before reassembling.
• For replacement or missing parts, call 1-800-245-9881
for assistance.

GROWSPAN™SINGLE BAY HIGH TUNNELS
13
Revision date: 04.08.16
QUICK START GUIDE
Single Bay High Tunnels
Actual building may differ in length.
Grid Represents 12" Squares
FRONT
10'-11 5/8"
Height
4'-0"
Sidewall
28'-0" Width

GROWSPAN™SINGLE BAY HIGH TUNNELS
14 Revision date: 04.08.16
FRONT PROFILE
102676
28SS1901D 28SS1901D
102676
28SS1902
28SS1902
28SS1902
28SS1903
102857 (End Rafter) 102547 (Mid Rafter)
Ground Level

GROWSPAN™SINGLE BAY HIGH TUNNELS
15
Revision date: 04.08.16
SIDE PROFILE-108207
(9)131S075
(1) 131P0265
Purlin Assembly
Purlin Assembly
56'-0" Length
7'-0"
Rafter
Spacing

GROWSPAN™SINGLE BAY HIGH TUNNELS
16 Revision date: 04.08.16
SIDE PROFILE-108208
Purlin Assembly
105'-0" Length
7'-0"
Rafter
Spacing
(17) 131S075
(1) 131P0375
Purlin Assembly

GROWSPAN™SINGLE BAY HIGH TUNNELS
17
Revision date: 04.08.16
SIDE PROFILE-108209
Purlin Assembly
154'-0" Length
7'-0"
Rafter
Spacing
(25) 131S075
(1) 131P0495
Purlin Assembly

GROWSPAN™SINGLE BAY HIGH TUNNELS
18 Revision date: 04.08.16
SIDE PROFILE-108210
Purlin Assembly
(33) 131S075
(1) 131P0615
Purlin Assembly
7'-0"
Rafter
Spacing
203'-0" Length

GROWSPAN™SINGLE BAY HIGH TUNNELS
19
Revision date: 04.08.16
CONNECTIONS
Purlin-Mid Rafter
Connection
See View 2
Purlin-End Rafter
Connection
See View 1
Rafter-Ground Post
Connection
See View 3
Guide Post - 4"x 4"
Connection
See View 4
Rafter- 4"x 4"
Connection
See View 5
Ground Level
GroundLevel

GROWSPAN™SINGLE BAY HIGH TUNNELS
20 Revision date: 04.08.16
CONNECTION - DETAILS
Rafter
Purlin
End Clamp
Cross Connector
Rafter
Purlin
VIEW 2
PURLIN-MID RAFTER
4" x 4" Supplied By Customer
106755
Guide Post Assembly
107923
Wood Screws FA4652
Tek Screws This Side
1/2" 5 1/2" Bolt 1/2" Nut and Washer
VIEW 1
PURLIN-END RAFTER
VIEW 3
RAFTER-GROUND POST
CONNECTION
Rafter
Ground
Post
VIEW 4
GUIDE POST- 4"x 4"
CONNECTION VIEW 5
RAFTER- 4"x 4"
CONNECTION
4" x 4" Supplied By Customer
Rafter
3/8" Threaded Rod To Be Cut In Field (2) 3/8" Nut and Washer
NOTE: End of threaded rod must be below surface of support.