THE BEST SIDE OF DRYER VENT SYSTEM

Louvers are static and are usually open to the skin. The dryers usually are not managing 24/7 so dampers should be provided to shut off outdoors air when the dryers are usually not in use. As dryers turn on, the damper will open to permit outdoors air to enter the House. Having said that, in partial load circumstances when not all dryers are workin