The draft stopper contains a pair of balanced shutters which open when the fan is turned on and close under their own weight when the fan is turned off. The Draft Stopper aims to reduce energy costs by preventing hot or cold air from entering or escaping the building via the hole in the ceiling for the exhaust fan. It is an easy and effective application to complete the draft proofing of your home or business.
Draft Stopper For Non-Ductable Exhaust Fans
A draft stopper is a simple and inexpensive way to stop standard ceiling exhaust fans from letting warm air out or cold air in. It will fit any motor that is smaller than the draft stoppers 330mm diameter.