GE Installation Manual

Installation Instructions

STEP 1

Outside Wall Plenum Opening

Ensure the outside wall plenum opening is properly

framed and square per the diagram shown below.

IMPORTANT: The wall plenum is not designed to carry

structural loads. A proper header must be built into the

rough opening and a proper lintel must be installed to

support brick or other masonry materials. The plenum

requires flashing, shimming and caulking for a weather-

resistant installation.

It is the responsibility of the contractor to properly

install the plenum and meet building code

requirements.

24”

32”

STEP 2

Setting the Plenum Depth

Measure the rough opening depth

If the rough opening depth is less than 7.5”, proceed

to STEP 3. If the rough opening depth is more than

7.5”, remove and discard the front 2 screws on the

plenum divider and loosen the rear 2 screws. This will

allow Part A and Part B to slide apart.

Adjust the plenum depth by sliding Part A and Part B

apart. Set plenum 1/4” deeper than the rough opening

to allow for a caulking edge on the exterior.

Tighten the rear screws.

Inside Wall

Building rough opening

Outside Wall

Front screws

Rear screws

D + 1/4”