Only WhisperWall™ models are specifically designed to be installed in a wall.

Smaller ceiling fans (up to 110 cfm) should not be installed in the wall due to mechanical concerns (motor orientation, bearing lubrication, built-in damper, etc.). However, if they are installed in the wall, the duct needs to be pointed up to allow the damper to operate, but the bearings may not last as long as specified due to insufficient oil flow within the sleeve bearings.

Larger fans (190 and 340 cfm) can be installed in either the ceiling or wall. These fans are not prone to lubrication concerns; however, the depth of the wall cavity versus the fan height of the housing should be considered.