Page 4 RACINST4 (7/97)
THRU–THE–WALL INSTALLATIONS
2 - Support brackets
2 - No. 12A x 2" Sheet Metal Screws
4 - 10-24 x 1" Machine Screws
4 - 10-24 Flat Nuts
1 - 36" Strip Foam Gasket (Part # 604-673-32)
2 - 10BP x 1/2" Slotted Truss Head Screws
3 - 8A x 1 1/4" Phillips Head Screws
2 - 8-32 x 1-1/8" Hex Head Self-Tapping Screws
NOTE: This unit may be installed in walls up to 9"
thick (maximum).

Hardware included for installation:

STEP 1 Remove the unit from the shipping carton. Remove the tape holding the decorative front in place. Remove the
front and place it out of the way. Slide the unit out of the shell. As you slide it out, you will notice a foam gasket
between the chassis and the cabinet. Save this gasket for STEP 6.
STEP 2 LAYOUT: Cut and frame-in an opening in the desired wall area, using Figure 6 as a guide. Remove two (2)
screws and relocate the sill plate back one inch to the next set of holes in the shell rail. Place the shell in the
wall opening with the front flange tight against the wall surface. Drill three (3) 3/32" (2.5 mm) diameter pilot
holes. Secure three (3) 1-1/4" long Phillips screws in the sill plate (Figure 7).
STEP 3 Attach the support brackets to the shell with screws and nuts furnished (See Figure 4 - Sash Window
Installations).
STEP 4 Secure the lower end of the support brackets to the wall. (See Figure 4 - Sash Window Installations.)
NOTE: If other than wood construction, use a piece of 2" x 4" lumber to attach support brackets. (See Figure
4 - Sash Window Installations.)
FIGURE 6

CONCRETE BLOCK CONSTRUCTION

FRAME CONSTRUCTION

FINISHED HOLE
SIZE
FINISHED HOLE SIZE 2" x 8" FRAME
SHELL
SILL CHANNEL RELOCATED 1" BACK TO THE
NEXT SET OF HOLES
INTERIOR WALL SURFACE
STEP 5 Caulk all around the shell on the outside to insure
a watertight seal. Slide the chassis into the shell
as far as it will go.
STEP 6 Reinstall the CHASSIS SEAL GASKET. Carefully
stuff the gasket between the chassis and the
cabinet, starting at either bottom corner and go up
the side, across the top and down the opposite
side. It is IMPORTANT that this gasket be
properly installed as it prevents air leakage
around the chassis.
STEP 7 Complete the installation by following STEPS 8
and 9 of the Sash Window Installation
Instructions, Page 3.

FIGURE 7

SCREW
(8A X 1-1/4"