UL555 Certified Fire Smoke Damper model FSD-311 is a high performance combination fire smoke damper with Class I leakage with 1 1/2 hrs fire resistance rating. High strength airfoil blades ensure the lowest resistance to airflow in HVAC systems with velocities to 4000 fpm (20.3more...
Greenheck airflow measuring products are available with either differential pressure based technology or thermal dispersion technology. AMS is accurate air flow measuring station with pressure transmitter proportional to air flow, while AMD is control air damper combined with airmore...
Greenheck’s IAQ-42 air flow measuring control damper utilizes patented Speciflow™ Technology built into the controller to measure the pressure, position of the damper blades, and temperature of the air flowing through the damper. The IAQ-42 will control air to prevent over vemore...