Vertical Adapter for QC 2250All purchases backed by our ironclad money-back guarantee
Must be used on the Quiet Cool Whole House Fans if you are going to to mount it vertically on a wall.
The vertical adapter makes sure that the dampers on the whole house fan close all the way. For use with the CL-2250 and ES-2250 whole house fan
For 14″ x 18″ Damper Ceiling Box