Install Instructions

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10.4 Wall Opening
The RMB housing will fit in a standard 2x6 wall with ½” drywall.
If installing in a 2x4 wall then the rear drywall must also be removed and the housing will protrude out the back of the
wall. Figure 10.c shows the wall opening dimensions for the RMB housing.
Notes:
1. The RMB housing has flanges on the front that must be mounted on the outside face of the drywall.
2. When installing in new construction, use a piece of return air angle to mark where the RMB unit will go to prevent
the drywall from being installed over the location for the RMB housing.
OPENING
Figure 10.b.
Figure 10.a.
OPENING
Figure 10.c.