Da-Lite Polacoat Flex Plex User manual

INSTRUCTION BOOK FOR
Polacoat Flex Plex Screen

2
Preparation
It requires at least four people to assemble a Flex Plex screen. To maintain optimal image geometry and screen alignment, a lat and
straight wall free from obstructions and angular distortions should be used. A wall opening with 5” + the ordered viewing height and
5” + the ordered viewing width must be used to maintain the precise in-wall it of the Flex Plex screen. When assembling the screen,
choose a clean work area using padded material or other soft, clean materials. The work area should be larger than the overall screen
size and directly in front of the wall opening where the screen is to be installed (audience side).
NOTE: Please read through the installation steps and note wait times. The rolled screen surface needs to be acclimated to the room for
48 hours prior to installation (Step 1). Once the surface is unrolled it will need to lay in its unrolled state for 4 hours (Step 2).
Disclaimer
Milestone and its ailiated corporations and subsidiaries (collectively "Milestone"), intend to make this manual accurate and complete.
However, Milestone makes no claim that the information contained herein covers all details, conditions or variations, nor does it provide
for every possible contingency in connection with the installation or use of this subject to change without notice or obligation of any
kind. Milestone makes no representation of warranty, expressed or implied, regarding the information contained herein. Milestone
assumes no responsibility for accuracy, completeness or suiciency of the information contained in this document.
Da-Lite® is a registered trademark of Milestone AV Technologies. All rights reserved.
Installation Video
To view a video of this installation, visit https://youtu.be/45xbaYpXjd8.
Maintenance and Protection
Projection screens should always be installed after the
completion of construction, drywall, and painting of all adjacent
areas. If construction work needs to occur near an installed
screen, clean polyethylene sheeting should be used to cover and
protect both surfaces. Never apply adhesive tapes to the
coated surface. Always be careful to guard the screen against
damage from moving scafolding, ladders, or staging materials.
General Cleaning
Never use solvents on or near Da-Lite rear projection screens.
Remove dust by gently blotting the screen with a soft, clean, lint-
free cloth.
Dry Soil Marks
Clean with VM&P Naptha or with Da-Lite Lenskleen and a soft,
clean, lint-free cloth.
Cleaning of Frame and Trim
The exposed surfaces of the aluminum frames can be cleaned
with a dilute solution of detergent and water, followed by a clear
water rinse. Use a soft, grit-free cloth to preserve the anodized
inish. Protect screen surface during frame cleaning. Do not use
abrasive cleaners or solvents.

Tools Required for Installation (not provided)
Screw Gun/Drill and Drill Bits 1/2" Open Wrenches
(2) Ladders
#10 x 1” Countersunk
Flat Head Screws
¼” x 1” Hex Lag Screws
1/8” & 3/16” Hex Keys
Measuring Tape LevelRubber Mallet
Knife

4
Included Parts and Hardware
N (3)
30’ Ropes
E (4) pairs
Gloves
C (2)
4” Pieces of Trim
A (1)
Screen Surface
P (6)
Trim Pieces
H (2)
Hoisting Brackets
O (24)
Tensioning Assemblies
G (6)
Frame Pieces
F (4)
Rubber Gaskets
B (6)
TTrac ks
D (3)
Lifting Brackets
I (4)
Cap Screws
NOTE: Quantities listed are for standard sizes. Quantities will vary if a custom screen that is larger than standard is ordered.
Q (4)
Corner Covers
L (24)
3/8" x 1/2" Hex Head Screws
M (24)
3/8" Thin Hex Nut
K (4)
Corner Bracket
J (4)
Seam Bracket

5
Screen Orientation
Polacoat® In-Wall rear projection screens have a polished surface and a matte, coated surface. The polished surface should always be
installed so that it faces the projector and the matte surface must face the audience. If screen has anti-glare coating, the anti-glare
surface should always face the projector.
Installation
1. Prepare clean working area and use padded materials or soft,
clean materials in the space where the screen will be
assembled on the loor.
WARNING: The screen surface should be allowed to
acclimate to the temperature and humidity of the location
where it will be installed. Da-Lite does not recommend
beginning installation if there is high humidity in the
room. Care should be taken to prevent water from
condensing on the screen surface as it may leave
permanent marks on the screen surface.
NOTE: Da-Lite recommends that the roll with screen surface
and hardware be removed from the crate and acclimated to
the location at least 48 hours prior to installation.
NOTE: Wear the provided gloves (E) any time the screen
surface is being handled and also during lifting to provide
grip.
2. Carefully unpack unit from crate and packaging. Remove
carton from crate before unpacking. Remove top of carton to
unpack the screen surface and hardware.
NOTE: If possible, move crate into the room where screen will
be installed before unpacking. If this is not possible, remove
the carton from the crate and transport the carton carefully.
DO NOT remove the screen surface roll and hardware from
the carton for transport.
CAUTION: Do not remove the screen surface and
hardware from the end of the carton. Removing the
carton ends will expose staples that can scratch the
screen surface.
3. Using four people, unroll the screen (A). Locate one person
on each end of the roll with the other two people used as
support for the middle of the roll. Before unrolling the screen,
ensure that the edge/end of the surface is nearest to the loor.
While maintaining slight pressure on the roll, cut each piece
of tape wrapped around the roll at the edge/end of the
surface. Once all tape pieces have been cut, the screen
surface can be unrolled. This should be done gently and in at
a measured pace to prevent damage to the surface. There
will be elastic potential energy stored in the roll. Carefully
guide the screen surface when unrolling, particularly on the
last wrap to prevent the surface from springing out or
scraping itself. The audience side of the screen surface will be
face down after it has been unrolled.
WARNING: Do not step on the screen surface or place
objects on the screen surface during this step or during
installation. This may cause irreparable damage to the
projection coating.
NOTE: Da-Lite recommends that the screen surface remain in
this lat, unrolled state for at least 4 hours prior to Step 10.
This will allow the screen surface to fully adjust to room
temperature and will signiicantly reduce the risk of breakage
or damage. Do not proceed to assembling the frame on the
screen surface if these precautions have not been taken.

6
Installation (continued)
4. While the screen is resting, the T-tracks (B) can be installed
into the wall opening. Measure 2½” from the side of your wall
opening to locate the end of the irst T-track (B) piece
(See Figure 1). Using one of the 4” pieces of trim (C), snap the
trim into place on one end of the T-track (B), place the T-track
in the opening and slide until the lower portion of the trim is
against the wall. Secure that end of the track with a #10 screw
in the hole closest to the end (See Figure 2).
Figure 1
2½"
NOTE: Most screen units will have one piece of T-track (B) for
the side openings and two pieces each for the top and
bottom wall openings. Larger sized units (above 14’ wide) may
have three pieces of T-track (B) each for the top and bottom
openings.
WARNING: Ensure each #10 countersunk screw head is
inserted completely and does not extend into the T-track
channel. If the screws are not inserted completely, the
screen tensioning assemblies will not slide through the
channel.

7
Step 4
Step 5
#10 Screw
4" Trim
Piece
T-track
5. Using the other 4” piece of trim (C) as a guide, secure the
opposite end of the T-track (B) section on the end hole with a
#10 screw. Once both ends are attached, slide the 4” trim (C)
pieces along the track to align the other positions and attach
a #10 screw into the hole openings until completed (See
Figure 2).
NOTE: Sliding the trim along the T-track (B) will maintain the
proper alignment when attaching the T-track (B) to the wall.
This alignment is necessary to allow the trim to snap on
easily at the end of the screen installation. Ensure the
opening is level on all four sides. If the opening is not level,
the T-track (B) will need to be shimmed in order to ensure the
screen trim is level once attached to the T-track (B).
Figure 2 Figure 3
Installation (continued)
6. Repeat Steps 4 and 5 until all T-track (B) sections have been
secured to the wall opening (See Figure 3). For top and
bottom sections, use 4” piece of trim (C) to overlap at the
seams as a guide to ensure that both T-track (B) pieces are
lush with each other in the wall opening.

8
Installation (continued)
Figure 4
7. Mount the irst lifting bracket (D) in the top section of the wall
opening behind the T-track (B). Measure 2⅛” from the back
(projector side) of the T-track (B) to the back edge of the
lifting bracket (D) and ½” from the edge of the opening to
position the bracket correctly. Use 1/4” x 1” lag screws to
attach the bracket (See Figure 4).
NOTE: Lifting brackets (D) must be parallel to T-track. When
installed in the correct orientation, the bottom lip of the lifting
bracket (D) will be the side closest to the T-track (B).
8. Repeat for the second lifting bracket (D) at the top section of
the screen in the opposite corner (See Figure 4).
9. Position the third lifting bracket (D) 2⅛” from the back of the
T-track (B) in the center of the top section of the wall opening
and mount with 1/4”X 1” lag screws (See Figure 4).
NOTE: After completing this step, there should be three lifting
brackets (D) mounted into the top section of the wall opening
behind the T-track (B). Check that these brackets are secure.
They will be used to guide the screen surface into place and
support its weight until the T-track (B) and screen frame are
attached to each other.
WARNING: After completing this step, do not proceed
further in the instructions until the screen surface has
remained in a lat, unrolled state for at least 4 hours.
2⅛"
1/2"
Step 7
Step 8
Step 9
Lifting Bracket
TTrac k

9
10. At the unrolled screen surface (A), peel back the protective
paper approximately 3/4” on the top and the bottom. This will
allow the frame to be attached easily to the screen surface.
NOTE: Do not remove the protective paper completely. This
will be done at the end of the screen installation in order to
protect the surface during the hanging process.
Da-Lite recommends that the provided gloves (E) be worn at
this time in order to prevent damage to the screen surface and
to provide grip while lifting.
11. Center the irst rubber gasket (F) on the screen surface edge
and press it into place starting at one end. Repeat this step
for the three remaining sides of the screen.
12. Place the frame sections (G) around the screen surface (A).
Attach to frame (G) over the rubber gasket (F) with set screws
facing upwards. Use a rubber mallet to gently tap the screen
frame into place if needed (See Figure 5)
Installation (continued)
13. Place the hoisting bracket (H) in the center of the top and
bottom sections of the screen frame. Attach to frame using
the provided cap screws (I) and a 3/16” hex key.
14. Starting from the center on each side, tighten all set screws
on all four sides of the frame using the 1/8” hex key.
Approximately two threads should be visible on each set
screw when properly tightened.
15. Prepare to attach the seam brackets (J) and corner brackets
(K) by carefully sliding the 3/8" x 1/2" hex head screws (L)
down the frame channel (two bolts on either side of the seam
and two on each side of each corner).
16. Carefully slide the seam bracket (J) under the assembled
frame, aligning the bracket and 3/8" screws (L) across the
seam. Secure using the 3/8" thin hex nuts (M) and tighten
completely.
17. Repeat for corner brackets (K).
Figure 5
Hoisting Bracket
Hoisting Bracket
Pre-Attached
Hoisting Brackets
Frame
Section
Rubber Gasket
Frame
Section
Hoisting Bracket
Rubber Gasket
Set Screw
Cap
Screw
Screen
(Projector Side)
Seam Bracket
Seam Bracket
Corner Brackets

10
Installation (continued)
18. Feed the irst rope (N) through the large hole on the audience
left hoisting bracket (H) so that the knotted end makes
contact with the inside of the bracket. Then, feed the rope (N)
through the audience left lifting bracket (D) that was installed
into the wall opening behind the T-track (B) (See Figure 6).
19. Repeat for the second rope (N) through the center and the
third rope (N) through the audience right hoisting (H) and
lifting brackets (D) (See Figure 6).
NOTE: At this point, all three ropes (N) should be fed through
the hoisting (H) and lifting brackets (D). There will be no rope
(N) placed through the single hoisting bracket (H) on the
bottom of the screen. On the rear (projector side) of the wall
opening, a person will be needed in the following steps to
guide the three ropes (N) as the screen is being lifted.
WARNING: Screen must be positioned close to, but not
touching, the wall before lifting. Do not lift the screen into
place if the ropes have not been fed through the hoisting
(H) and lifting brackets (D).
Figure 6 Figure 7
20. Lift the screen assembly to a vertical position on the loor
parallel to the wall opening. On the projector side of the wall
opening, one person will be holding all three ropes (N)
without slack and guiding the screen to an upright position.
On the audience side of the wall opening, to lift there should
be one person on the left side of the screen, one person on
the right and one person supporting the top center of the
screen frame at the center hoisting bracket (H). After this step
is completed the screen will be standing on the loor in front
of the wall opening (See Figure 7)
CAUTION: Do not allow the screen to twist or bow during
this step. Without careful lifting, there is potential to
crack, break or shatter the screen surface. Four people
must be used during this step.
Hoisting Brackets
Lifting Brackets

11
Installation (continued)
21. Raise the screen assembly into the wall opening. On the
projector side, one person will remain holding all three ropes
(N) without slack, guiding the screen into place. On the
audience side, two people will lift the screen vertically, one on
the left and one on the right side. These three people (one
rope control and two lifters) will coordinate together to lift the
screen into place. The fourth person should be on a ladder on
the projector side helping the rope control and lifters guide
the screen assembly into place until all three hoisting and
lifting brackets attach to each other at the top of the wall
opening (See Figure 8).
Figure 8
TTrac k
2⅛"
Lifting Bracket
Hoisting
Bracket
Screen Assembly
(Audience Side)
22. Once the screen is hanging on the hoisting and lifting
brackets, carefully remove the seam (J) and corner (K)
brackets along with the 3/8" screws (L) and nuts (M).
NOTE: During this step, be careful not to touch the projection
coating on the audience facing side of the screen assembly
along the screen edges.
NOTE: At the end of this step, the screen assembly’s weight
should be supported by the hoisting and lifting brackets and
it should be centered side to side inside of the wall opening.
Gloves can be removed at this time.

12
Figure 9
Installation (continued)
23. At the top section, align the T-track and the frame. Insert eight
tensioning assemblies (O) (four per frame section for larger
screens). Align the tensioning assemblies (O) so that they are
evenly spaced across the length of T-track and frame (See
Figure 9)
24. Tighten a minimum of two tensioning assemblies (O) per
frame section between the T-track and frame using a 1/2”
wrench. After two or three turns on one tensioning assembly,
move to another in order to prevent the bolts and nuts from
binding. Keep using this alternating method until at least two
(or more) tensioning assemblies, per frame section, have
secured the frame to the T-track on the top section of the
screen assembly. As the tensioning assemblies are tightened
the screen frame will pull gradually closer to the T-track. Do
not tighten fully at this time.
CAUTION: Do not proceed to next steps until a minimum
of two tensioning assemblies (O) per frame section are
attached fully and are holding the screen weight on the
top side.
25. Remove the three lifting brackets (D) from the wall opening
behind the T-track by loosening and removing the 1/4” x 1” lag
screws. The three ropes (N) should also be removed at this
time.
NOTE: Once the lifting brackets have been removed, the
screen assembly will be held in place by the previously
attached tensioning assemblies.
26. Tighten all tensioning assemblies (O) on the top section of
the screen assembly until all eight (four per frame section)
are evenly spaced and secure on the top side.
NOTE: Use the alternating method of two to three turns on
one assembly then moving to another assembly to prevent
the bolts and nuts from binding.
27. At the bottom section, align the T-track and the frame. Insert
eight tensioning assemblies (O) (four per frame section for
larger screens). Align the tensioning assemblies (O) so that
they are evenly spaced across the length of T-track and
frame.
28. Begin tightening the tensioning (O) assemblies between the
T-track and frame using a 1/2” wrench. After two or three turns
on one tensioning assembly, move to another in order to
prevent the bolts and nuts from binding. Keep using this
alternating method until the tensioning assemblies have
secured the frame to the T-track.
NOTE: These tensioning assemblies (O) do not need to be
tightened down completely (no threads showing) because
the top frame is already anchoring the screen in place. The
bottom needs to be secure enough to the installer’s
discretion.
29. Repeat Steps 27 and 28 for the left and right sides of the
frame, using four tensioning assemblies (O) per frame
section.
Tensioning Assembly
Frame Section
TTrac k

13
Installation (continued)
30. Assemble the six provided trim pieces (P). The two top pieces
will be labeled "A" at the 45 degree overlap and the two
bottom pieces will be labeled "B". The remaining two pieces
are for the sides and are interchangeable.
31. Starting at the audience side bottom right corner, align the
irst piece of bottom trim (P) with the bottom edge of the
screen. The end should be approximately 3" from the corner
of the wall opening. When aligned, snap the trim (P) onto the
T-track while moving along the length of the piece until irmly
in place. Align the second bottom piece of trim (P) at the 45
degree overlap and snap onto the T-track starting at the
overlap while moving along the length of the piece until
irmly in place (Figure 10).
NOTE: Custom screens may use three pieces.
32. Starting at the audience side bottom left corner, align a side
piece of trim (P) with the side edge of the screen. The end
should be approximately 3" up from the corner of the wall
opening. When aligned, snap the trim (P) onto the T-track
while moving along the length of the piece until irmly in
place (Figure 10).
33. Repeat Step 31 for the top trim pieces (P) and Step 32 for the
audience right trim piece (P) (Figure 10).
34. Place corner covers (Q) over each corner to check it and
alignment. Adjust trim if necessary. When satisied with
desired placement of all four corner covers (Q), peel the red
release liners from the two pieces of adhesive and irmly
press each corner cover into place (Figure 10).
35. Carefully remove the protective paper on the projector side
of the screen surface to complete the installation.
Figure 10
Trim Pieces
45 Degree
Overlap
Corner
Cover
Trim TTra ck
1
3
4
5
6
2
AA
BB

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LIMITED FIVE YEAR WARRANTY ON DALITE POLACOAT INWALL REAR PROJECTION SCREENS
Milestone AV Technologies LLC warrants this Da-Lite branded product to the original purchaser only, to be free from defects in materials and
workmanship for a period of ive (5) years from the date of purchase by the original purchaser; provided they are properly operated according
to Da-Lite’s instructions and are not damaged due to improper handling or treatment after shipment from the factory.
This warranty does not apply to equipment showing evidence of misuse, abuse or accidental damage,
or which has been tampered with or repaired by a person other than authorized Da-Lite personnel.
Da-Lite’s sole obligation under this warranty shall be to repair or to replace (at Da-Lite’s option) the defective part of the merchandise. Returns for
service should be made to your Da-Lite dealer. If it is necessary for the dealer to return the screen or part to Da-Lite, transportation expenses to
and from
Da-Lite are payable by the purchaser and Da-Lite is not responsible for damage in shipment.
To protect yourself against damage or loss in transit, insure the product and prepay all transportation expenses.
TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS
OR IMPLIED, INCLUDING WARRANTIES AS TO FITNESS FOR USE AND MERCHANTABILITY. Any implied warranties of itness for use, or
merchantability, that may be mandated by statute or rule of law are limited to the ive (5) year warranty period. This warranty gives you speciic
legal rights, and you may also have other rights, which vary from state-to-state.
TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, NO LIABILITY IS ASSUMED FOR EXPENSES OR DAMAGES RESULTING
FROM INTERRUPTION IN OPERATION OF EQUIPMENT, OR FOR INCIDENTAL, DIRECT, OR CONSEQUENTIAL DAMAGES OF ANY
NATURE.
In the event that there is a defect in materials or workmanship of a Da-Lite product, you may contact our Customer Care Specialists at 3100
North Detroit Street, Warsaw, IN 46582, (574) 2678101, (800) 6223737.
IMPORTANT: THIS WARRANTY SHALL NOT BE VALID AND DALITE BRANDED PRODUCTS SHALL NOT BE BOUND BY THIS
WARRANTY IF THE PRODUCT IS NOT OPERATED IN ACCORDANCE WITH THE DALITE WRITTEN INSTRUCTIONS.
Keep your sales receipt to prove the date of purchase and your original ownership.
Warranty