Description
The HD Series dampers are extruded aluminum parallel blade dampers complete with a 24 volt spring return actuator. These dampers are shipped complete and ready for installation. The HD Series dampers can be installed in any position. They are rated for duct systems less than 1.0″ WC. The HD Series damper has a simple adjustment for setting the minimum position.
These dampers have a Bottom Mount.
Peter Kalinin (verified owner) –
Thanks for this smart, normally open, spring-return motorized damper! I don’t need a zoning controller; just a second thermostat with a relay is enough to close this NO damper and close another one: a round, NC spring-return Honeywell damper.