Wenger SoundLok User manual

Assembly Instructions
SoundLok®Sound-Isolation Room
Note: Please read and understand the SoundLok®Sound-Isolation Room Assembly Instructions
before starting the installation.
Note: Remove all items from the shipping containers and sort the components by type, size, etc.
Refer to the illustrations on the following pages. If you need additional information,
contact the Wenger Corporation using the information below.
©Wenger Corporation 2019 Printed in USA 2019-01 Part #270A673-09
Wenger Corporation, 555 Park Drive, P.O. Box 448, Owatonna, Minnesota 55060-0448
Questions? Call.....USA: (800) 4WENGER (493-6437) • Worldwide: [phone] • wengercorp.com
Contents
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Important User Information . . . . . . . . . . . . . . . . . . . . . . .2
General ..................................2
Manufacturer ..............................2
Intended Use..............................2
Warranty .................................2
Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Required Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Fastener Parts List - Floor Frame . . . . . . . . . . . . . . . . . .4
Fastener Parts List - Door. . . . . . . . . . . . . . . . . . . . . . . .4
Fastener Parts List - Ceiling . . . . . . . . . . . . . . . . . . . . . .4
Fastener Parts List - Closures. . . . . . . . . . . . . . . . . . . . .4
Electrical Connections. . . . . . . . . . . . . . . . . . . . . . . . . . .5
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Floor Frame and Door Assembly ..............6
Floor Frame Leveling .......................10
Wall Panel Installation.......................11
Horizontal Window Option With Offset
Communication Conduit .................13
Horizontal Window Option With Straight-Through
Communication Conduit .................13
Extended Height Option .....................14
Ceiling Frame Rail Beam Option ..............15
Ceiling Frame Rails.........................16
Ceiling Panels .............................17
HVAC Ceiling Panels .......................19
Inside Ceiling Trim .........................20
Door Assembly ............................21
Door Seal Adjustment .......................26
Lights....................................27
Hole Plugs................................27
Door Stop ................................27
Clean the Panels...........................27
Electrical Connections. . . . . . . . . . . . . . . . . . . . . . . . . . .28
Electrical Panel ............................28
Optional Communications Panel...............28
Horizontal Closures . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Vertical Closures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Cleaning .................................34
Door Hinge Lubrication ......................34
Adjustments...............................34
Horizontal Window Glass Replacement .........35
Glass Door or Vertical Window Glass Replacement ..35
Magnetic Gasket Replacement ................36
Sweep Seal Gasket Replacement .............36
Key Replacement ..........................36
Visit the SoundLok®Sound-Isolation Room
Installation Video on the Wenger Youtube.com channel.

2
Safety Precautions
Make sure that anyone
assembling the SoundLok
Sound-Isolation Room has
read and understands these
instructions.
!CAUTION
Failure to comply with
Warnings and Cautions in
this document can result
in damage to property or
serious injury.
!CAUTION
Always observe and comply
with the Warnings and
Cautions posted on the
system equipment.
!CAUTION
Throughout these instructions you may find cautions and warnings which are defined as follows.
• WARNING: Failure to follow the instruction could result in serious injury or damage to property.
• CAUTION: Failure to follow the instruction could result in minor injury or damage to property.
Read all of these safety instructions before assembling the SoundLok Sound-Isolation Room.
Important User Information
General
Copyright © 2019 by Wenger Corporation
All rights reserved. No part of the contents of this manual may be reproduced, copied, or transmitted
in any form or by any means including graphic, electronic, or mechanical methods or photocopying,
recording, or information storage and retrieval systems without the written permission of the publisher,
unless it is for the purchaser's personal use.
Printed and bound in the United States of America.
The information in this manual is subject to change without notice and does not represent a commitment
on the part of Wenger Corporation. Wenger Corporation does not assume any responsibility for any
errors that may appear in this manual.
In no event will Wenger Corporation be liable for technical or editorial omissions made herein, nor for direct,
indirect, special, incidental, or consequential damages resulting from the use or defect of this manual.
The information in this document is not intended to cover all possible conditions and situations that might
occur. The end user must exercise caution and common sense when assembling or installing Wenger
Corporation products. If any questions or problems arise, call Wenger Corporation at 1-800-887-7145.
Manufacturer
The SoundLok Sound-Isolation Room is manufactured by:
Wenger Corporation
555 Park Drive
Owatonna, MN 55060
(800) 4WENGER (493-6437) • [phone]
www.wengercorp.com
Intended Use
· This product is designed to create a sound isolating environment.
· This product is intended for indoor use in normal ambient temperature and humidity conditions.
· This product is intended to be assembled only as described in these instructions.
Warranty
This product is guaranteed free of defects in materials and workmanship for five full years from date of
shipment. A full warranty statement is available upon request.

3
Before You Begin
1. Read and understand the complete assembly procedure before beginning.
2. A licensed electrician must install all distribution connections for the electrical service shown
in the unit plan.
3. Clear the construction area and allow twelve inches of space around the module.
4. Place all parts into stacks of similar part numbers where they can be easily reached.
Components are large and
heavy and must be moved by
two people working together.
Moving doors requires four
people working together.
!CAUTION
All electrical connections
and electrical installation
must be done by a licensed
electrician.
!WARNING
The electrical source must be
permanently wired with the
Power Panel Kit and comply
with local electrical codes.
!WARNING
Required Tools
The following tools are required to assemble the
SoundLok Sound-Isolation Room.
· Mallet
· Flat Head Screwdriver
· Phillips Head Screwdriver
· Box Level
· Tape Measure
· Channel Lock Pliers
· Socket and Rachet Set
· Small Pry Bar
· 5/16" Hex Allen Wrench
· Work Gloves
· Goggles
The following tools are required to assemble the
Inset Floor Option.
· Drill
· Phillips Head Drive Bit
· 1/8" Drill Bit
· Hack Saw

4
Fastener Parts List - Floor Frame
Fastener Parts List - Door
Fastener Parts List - Ceiling
HOLE PLUG,3/4",PAINTED,CF
Machine Screw,
¼-20 x .590
HOLE PLUG,3/4",PAINTED,CF
Machine Screw,
¼-20 x .590
HOLE PLUG,3/4",PAINTED,CF
Machine Screw,
¼-20 x ⅝"
HOLE PLUG,3/4",PAINTED,CF
Set Screw, Allen.
5/16-18 x ½"
HOLE PLUG,3/4",PAINTED,CF
Washer, Neoprene,
⅜ x ⅞" OD
HOLE PLUG,3/4",PAINTED,CF
Washer, 5/16" ID
HOLE PLUG,3/4",PAINTED,CF
Capscrew,
5/16-18 x ¾"
HOLE PLUG,3/4",PAINTED,CF
Washer, Flat, Type A
¼ x .734
HOLE PLUG,3/4",PAINTED,CF
Capscrew,
¼-20 x ¾"
Fastener Parts List - Closures
HOLE PLUG,3/4",PAINTED,CF
Self Drilling Screw,
#8-18 x ¾"
HOLE PLUG,3/4",PAINTED,CF
Self Tapping Screw,
#12-14 x 1¾"
HOLE PLUG,3/4",PAINTED,CF
Socket Screw,
3/8-16 x 1"
HOLE PLUG,3/4",PAINTED,CF
Hole Plug, 3/4"

5
Electrical Connections
Wenger will supply the customer with a power panel kit prior to the SoundLok installation date.
This hardware will allow Wenger to connect the ETL Classified electrical system to the customer's
house service using the following steps.
1. A certified electrician must wire the outlet to house power. House power requirements are
120V, 60 HZ, 20 amp circuit for each connector.
The drawing below indicates the approximate locations of 120V, 60 HZ, 20 amp house service
for a typical SoundLok layout.
The power panel includes a 20' (6096 mm) long cable that attaches to the distribution connector.
Requirements for electrical installation are based on local electrical codes.
Wenger has no special height requirements for the distribution connector.
2. Fasten the cover plate to the box in the wall.
3. Fasten the distribution connection to the cover plate and attach dust cap.
Customer's
House Service
Cover Plate and
Screws Supplied
By Wenger
Distribution Connector
Supplied By Wenger
White
(Neutral)
Black
(Line) Green
(Ground)
Dust Cap
Supplied By
Wenger
E E
House Service
Locations

6
Installation
IMPORTANT: Before beginning the installation it is important to have an understanding of the
layout plan. Review all drawings and follow the layout plan drawing as configured.
IMPORTANT: These procedures are not rated for environments that require seismic installation.
For seismic procedures, see 270A672.
Floor Frame and Door Frame Assembly
This procedure is described for a 36" (914 mm) or 48" (1219 mm) door.
For 90" (2286 mm) Double Doors, see the instructions in 270A837.
1. Locate the floor frame sides, connect brackets and the four corner sections.
2. With the padded side towards the ground,
lay all of the pieces out according to
the layout plan to create the outline
of the room, leaving an opening for
the door.
NOTE: A corner section must be placed in
each corner regardless of the door
position and size.
If the optional Inset Floor is being installed, follow the procedure
in 271A210 before proceeding.
The SoundLok door frame is shipped fully assembled in a
wooden crate.
3. Remove the screws holding the side and top panels of
the door crate.
4. Lift the door frame assembly from the crate and transport
it to the final set-up location.
Top
Panel
Side
Panel
The door frame assembly is
heavy. More than one person
must lift the assembly from
the crate and set into place.
!CAUTION
Do not slide the door
assembly gaskets on any
surface.
!CAUTION
Door
Crate
Door
Frame
Assembly
36" (914 mm)
Door
45" (1143 mm)
Opening
48" (1219 mm) Door
60" (1524 mm)
Opening
Double Door
90" (2286 mm)
Opening
Floor
Frame Side
Corner
Section
Connect
Bracket

7
Installation (continued)
Floor Frame and Door Frame Assembly (continued)
5. Adjust the levelers on the underside of the door assembly so that when it is upright,
it will stand vertical, level and square to the floor.
Note: Do not extend levelers beyond the gaskets attached to the underside of the
door frame assembly.
6. Attach a door connect bracket to the bottom outside edge on both sides of the door frame
assembly using two ¼-20 x ⅝" machine screws in each bracket as shown.
Note: Do not over-tighten the machine screws
as this could cause the door connect brackets
to warp.
7. Stand the door frame assembly upright and use a box level to
check the level of the floor where the door frame assembly will be located.
Door
Connect
Bracket
¼-20 x ⅝"
Machine
Screws Door
Connect
Bracket
¼-20 x ⅝"
Machine
Screws
Leveler
Leveler
The door frame assembly is
not self-supporting. It must be
supported until an adjacent wall
panel is attached.
!CAUTION

8
Installation (continued)
Floor Frame and Door Frame Assembly (continued)
8. According to the layout plan drawing,
attach the appropriate floor frame side
piece to each door connect bracket
using two ¼-20 x 0.59 machine
screws as shown.
9. Attach a floor frame connect bracket to
the open end of each floor frame
side piece using two loosely
tightened ¼-20 x 0.59 machine
screws as shown.
The floor frame connect
brackets may be aligned with
the floor frame by inserting a
screwdriver through the holes
and prying into place.
10. Apply a self adhesive gasket straddled
evenly over both the floor frame side
and floor frame connect bracket
as shown.
The next floor frame piece will be
placed over the top of this gasket.
Floor
Frame Side
¼-20 x 0.59
Machine Screws
Floor Frame
Side
¼-20 x 0.59
Machine Screws
Floor Frame
Connect
Bracket
¼-20 x 0.59
Machine Screws
Floor Frame
Connect
Bracket
¼-20 x 0.59
Machine Screws
Gasket
Gasket

9
Installation (continued)
Floor Frame and Door Frame Assembly (continued)
11. With the door frame in it's permanent location, check the door frame
to be sure that the vertical frame edges stand plumb to be able to
mate with the wall panels when they are installed.
12. If the door frame is not vertically plumb, carefully tilt
the assembly to allow access to the levelers.
a. Start with the levelers retracted as far as possible.
b. On the lowest corner, extend the leveler until the
door frame is level when resting on the floor.
If installing a double door, resume the procedure at this point
after the door frame has been assembled according to
the instructions in 270A837.
13. Connect the floor frame pieces together according to the
layout plan drawing using a floor frame connect bracket and
gasket at every location that two floor frame pieces meet end-to-end.
IMPORTANT: To properly seal the frame to the floor, each floor rail gasket must
protrude beyond the bottom of the floor rail channel by a minimum of 1/4" (6 mm).
Positioning each leveling screw in the floor frame to be 3/16" (5 mm) or approximately
3 turns above the threaded insert heads is a good starting point.
The bottom of the floor rail channel must remain at least 1/4" (6 mm) above the host floor.
Allowing the floor rail channel to contact the floor can result in insufficient floor rail gasket
compression and reduced acoustical performance.
a. The floor frame piece is set over the top of the previously installed gasket.
b. Straddle a floor frame connect bracket on the underside of two adjoining
floor frame pieces with the four pre-drilled holes aligned.
c. Thread two ¼-20 x 0.59 machine screws through each side of a
floor frame piece and into the connect bracket as shown.
d. Apply a self adhesive gasket straddled evenly
over the top of each floor frame side
and floor frame connect bracket.
IMPORTANT: The foam padding at the
bottom of the floor frame pieces must
all lay flat on the floor and not bowed up
to ensure proper fit and to prevent sound leaks.
Vertical
Frame
Edge
Vertical
Frame
Edge
¼-20 x 0.59
Machine
Screws
Floor Frame
Connect Bracket
at each adjoining
location
Gaskets
Gasket
Gasket
Gaskets
Gasket
Gaskets

10
Installation (continued)
Floor Frame Leveling and Adjustment
1. With the floor frame and door frame connected, check that the entire frame assembly
is the correct distance from the wall
according to the layout plan drawing.
Also check that the frame assembly
is square by measuring diagonally
from corner to corner.
Both dimensions must be
equal. Make any necessary
adjustments until the
floor frame is square.
2. Using a box level, start at the door assembly and
level each floor frame section working in a single direction.
a. Leveling screws are distrubuted along the top side of the floor frame.
b. Turn each leveling screw clockwise to lift the floor frame and counter-clockwise
to lower the floor frame until the entire section is level.
On longer floor frame sections may be best to adjust the outer leveling screws first,
then move in toward the middle.
Note: Each leveling screw must contact the wall frame pad assembly.
c. The rubber pad under the floor frame will compress slightly under the weight of the room.
IMPORTANT: Once the floor frame is level, test for gaps between the floor rail gasket
and the floor by attempting to slide a piece of paper underneath the gasket.
If gaps are present, stand on the
floor rail to check if the gasket
compresses enough to trap the
paper. If not, adjust the
leveling screws in that area
to force the gasket down
to close the gap.
3. If optional vertical closures will
be installed, now is a convenient
time to attach any studs to the
structure wall before the
wall panels are installed.
IMPORTANT: The floor frame must be square
and level before installing the wall panels
to ensure proper fit and to prevent sound leaks.
Leveling
Screws
Distance
from
Wall
Distance
from
Wall
Stud
for
Closure
Panel Stud
for
Closure
Panel

11
Installation (continued)
Wall Panel Installation
If the optional Inset Floor has been installed, the Inset Floor Door Trim should now be installed
following the procedure in 271A210.
1. Locate and identify all of the wall panels sections. These must be installed exactly as indicated
in the layout plan drawing.
2. Start the wall panel installation on the right-hand side of the door assembly when standing
inside of the room.
3. Locate the wall panel section for this location according to the layout plan drawing
(in this case it is a corner panel).
Place the first wall panel section into position, next to the door assembly and into the
channel on the top of the floor frame. The surface with rubber seals is the bottom and
contacts the floor frame.
4. Attach the wall panel section to the door assembly by turning the roto locks located at the
left-hand inside edge of the wall panel section.
The roto locks are contained behind the inside skin panel.
Note: The upper and lower roto locks turn in opposite directions.
This allows the wall panel to move up and down
for perfect alignment and seal.
Locked panels must be flush along the top
and sealed with the floor frame at the bottom.
a. Using a 5/16" hex allen wrench, turn the lower
roto lock clockwise until the top of the wall panel
is flush with the top of the door assembly.
b. Using a 5/16" hex allen wrench, turn the upper
roto lock counter-clockwise until it is tight.
c. Finish tightening the upper roto lock by
turning it clockwise. Make sure the wall panel
is flush with the door assembly at the top.
Repeat these steps until they are flush.
First Wall Panel
Section, Rubber Seal
Surface Contacts
Floor Frame
Upper Roto Lock
Turns
Counter-Clockwise
Lower Roto Lock
Turns
Clockwise
The roto locks are located behind the inside skin panel.
The inside skin panel is shown hidden for clarity.

12
Installation (continued)
Wall Panel Installation (continued)
5. Work in a clockwise direction and continue to install
the remaining wall panel sections according to the
layout plan drawing.
a. Repeat Steps 3 and 4, locking the
roto locks in the next wall panel
section to the previously installed
wall panel section.
b. Continue to install the remaining wall panel sections.
The final wall panel section to be installed
should be a straight wall panel section
and not a corner panel section.
Final
Wall Panel
Location

13
Installation (continued)
Horizontal Window Option With Offset Communication Conduit
The horizontal window wall panel is attached in three sections.
1. Place the bottom panel section in position on the floor frame.
Attach it to the adjacent panel sections by turning the roto locks.
2. Position the window panel section on top of the
bottom panel section.
Attach the two sections together by turning
the roto locks along the bottom edge of the
window panel section.
Attach it to the adjacent panel sections by turning
the roto locks.
3. Position the top panel section on top of the
window panel section.
Attach the two sections together by turning the roto locks
along the top edge of the window panel section.
Attach it to the adjacent panel sections by turning the roto locks.
Horizontal Window Option With
Straight-Through Communication Conduit
With this option, connections between the adjacent rooms must be made as the rooms
are being assembled. The rooms must be positioned so the windows are directly opposite each other.
1. After one wall is erected in the first room, position the floor rail of the second room.
2. Remove the conduit and fittings from the compartment inside the bottom panel section.
3. Place the bottom panel in the floor rail.
4. Assemble the three threaded
conduit fittings as shown into the
backs of both electrical boxes
in both bottom panels.
5. Hold the second bottom panel
vertical and measure the length
of conduit required to connect
the adjacent bottom panels.
6. Cut the conduit to the appropriate lengths
and position them between the panels by
rocking the second panel inward just
far enough to position the conduit.
7. With all three conduit lengths positioned,
re-plumb the panel, secure it by roto locking
to the adjacent wall panel and continue
assembling the next room.
Top Panel
Section
Middle Window
Panel Section
Bottom Panel
Section
The window panel section is
heavy. More than one person
must lift it and set into place.
!CAUTION
1-1/2” Conduit to
Adjacent Room
Electrical
Box
Male
Adapter
Locknut
Cap
Attach
Cover
Plate
Bottom Panel
Section
Electrical
Box

14
Installation (continued)
Extended Height Option
Rooms taller than 7'6" (2286 mm) will require a header panel over the door to close off the space.
If this is a standard height room, this step is not required. Continue on to "Ceiling Frame Rails".
1. Position the header panel in the open space above the door frame.
2. Lightly engage the roto locks (if present) on each side of the header panel.
3. Using a magnetic socket and the appropriate extensions, install 5/16-18 x 3/4" capscrews
from the top of the header panel down through the access tubes and into the top of the doorframe.
4. Alternately tighten these capscrews and roto locks until the top of the header panel is flush
with the tops of the adjacent wall panels.
5/16-18 x ¾" Hex
Head Capscrew
Header
Panel

15
Installation (continued)
Ceiling Frame Rail Beam Option
Larger rooms may require a ceiling frame rail beam to support the ceiling panels.
Check the layout plan drawing to determine if this is required and attach it as follows.
If it is not required, continue on with the assembly.
1. Position the beam according to the layout plan drawing.
2. Attach the beam to the top of the wall panels using a 3/8" neoprene washer, a 5/16" flat washer
and a 5/16-18 x 3/4" capscrew through each of the four pre-drilled holes in the beam and into
the matching rivet nut location on at the top of the wall panel.
Ceiling Frame
Rail Beam
5/16-18 x ¾" Hex
Head Capscrew
5/16" Flat Washer
3/8" Neoprene Washer
Rivet Nut
Do not leave the ceiling frame
rail beam unattended until
after it is completely attached
to the wall panels.
!WARNING

16
Installation (continued)
Ceiling Frame Rails
1. Position the first ceiling frame rail on top of the wall panel section that was installed first.
2. Loosely attach the ceiling frame rail to the top of the wall panel section using a 3/8" neoprene washer,
a 5/16" flat washer and a 5/16-18 x 3/4" capscrew through each of the pre-drilled holes
in the ceiling frame rail and into the matching rivet nut location on at the top of the wall panel.
3. Working in a clockwise direction position the next ceiling frame rail with the end tab on top of
the previously installed rail.
4. Continue to install the remaining ceiling frame rails according to the layout plan drawing.
5. Tighten all of the capscrews so that the neoprene washer is slightly compressed and the ceiling
frame rails are aligned with the others and secure against the wall panels to prevent sound loss.
6. The door can now be closed.
5/16-18 x ¾" Hex
Head Capscrew
5/16" Flat Washer
3/8" Neoprene
Washer
Rivet
Nut
End
Tab
Installed
Ceiling
Frame Rail
Ceiling
Frame Rail

17
Installation (continued)
Ceiling Panels
1. Position the first end ceiling panel at the end of the room with the roto locks facing inside the room.
2. Loosely attach the ceiling panel to the frame rail using a 1/4" flat washer and a
1/4-20 x 3/4" capscrew through each of the pre-drilled holes in the frame rail and
into the cage nuts located underneath the skin of the ceiling panel.
Leave the ceiling panels loose to allow for adjustment while installing additional panels.
IMPORTANT: Do not push too hard on the capscrews,
or the cage nut under the ceiling panel skin could
be damaged.
1/4-20 x 3/4"
Hex Head
Capscrew
1/4" Flat
Washer
First End
Ceiling Panel
End Panel
Roto Lock
Locations
Cage Nut
Location

18
Installation (continued)
Ceiling Panels (continued)
3. Locate the next inside ceiling panel in the order according to the layout plan drawing.
IMPORTANT: Male roto locks must be used in all end ceiling panels.
Switching roto lock configuration between male and female may be required
on mating panels.
4. Place the ceiling panel next to the end ceiling panel on top of the frame rail. Position the panel
edges to be flush with the edges of the previously installed panel
5. Loosely attach the ceiling panel to the frame rail using a 1/4" flat washer and a
1/4-20 x 3/4" capscrew through both of the pre-drilled holes in the frame rail and into the
cage nut of the ceiling panel.
Turn both male roto locks located on the under-side of the end ceiling panel to secure both
ceiling panels together.
6. Continue to install the remaining ceiling panels using these steps according to the layout plan
drawing. Roto locks for the inside ceiling panels are turned from the bottom-side of the ceiling
panels.
7. Tighten all of the capscrews used to attach the ceiling panels to the frame rail on the
inside of the room.

Installation (continued)
HVAC Ceiling Panels
If the ceiling contains HVAC ceiling panels, ceiling vent adapters are installed to them as follows.
1. Position the ceiling vent adapter on top of the HVAC ceiling panel by aligning the
pre-drilled holes.
2. Attach the ceiling vent adapter to the HVAC ceiling panel through the pre-drilled holes
using #8-15 x 5/8" pan head screws.
Note: Connection to the building HVAC system must be made with an 8" (203 mm) diameter
flexible duct, NOT rigid duct. Rigid duct will decrease the sound isolation of the rooms.
This is NOT included with the rooms but is available from any HVAC contractor.
Air flow to the rooms must be adjusted as described on the drawing for the size room
being installed. This is done by the HVAC contractor.
#8-15 x 5/8"
Pan Head Screw
HVAC
Ceiling Panel
Ceiling Vent
Adapter
19

20
Installation (continued)
Inside Ceiling Trim
The inside ceiling trim covers the ceiling rail frame inside of the room.
1. Hook the upper lip of the inside ceiling trim over the top of the ceiling rail frame tab.
Install the straight sections first followed by the corner sections.
2. Tilt the inside ceiling trim down until the lower lip snaps over the bottom of the ceiling rail frame tab.
3. Continue the process around the room until all of the inside ceiling trim sections are attached.
Inside Ceiling Trim
Straight Sections Upper
Lip
Lower
Lip
Ceiling Rail
Frame Tabs
Inside Ceiling
Trim Corner
Section
Inside Ceiling
Trim Corner
Section
The ceiling panels are shown hidden for clarity.