Duro Dyne® DDRD Series 35073 Pressure Relief Damper, 14 in, Steel, Galvanized, Round

Duro Dyne® Pressure Relief Damper, Series: DDRD, 14 in Size, 1300 cu-ft/min at 1200 ft/min, Steel, Galvanized, Round

DuroZone Pressure Relief Dampers are used to relieve excess air pressure created when less than all the zones of a duct system are calling. They do this in a simple and reliable fashion based on barometric/static pressure in the duct system. When pressure builds up in the duct system due to satisfied zones, the pressure opens the damper blade and "bypasses" to an unconditioned area or back to the return air duct. The pressure relief damper closes when the system is off or when all the zones are calling.

• Plated steel counterbalance rod and weight
• Sintered bronze oil impregnated bushings
• Thumb screws for easy adjustment
• Ability to-mount counterbalance rod on either side

Specifications