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Use this vertical adapter if you are going to mount it vertically on a wall
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of area to be cooled
The QuietCool Whole House Fan provides excellent cooling benefits but also functions as a home ventilation system which helps remove excess humidity through the entire year
Quiet Cool 4700 Vertical Mount Adapter Use this vertical adapter ifFor use with the Quiet Cool 4700 or 5400 whole house fan is you are going to mount it vertically on a wall. For use with the CL 4700, CL 5400 and ES 4700 ES 5400 whole house fans. This adapter will make sure that the dampers close completely.
