WebThe WD-320 series dampers are designed to prevent reverse airflow in horizontal exhaust applications. The WD-320 features a pressure sensitive blade design that opens and remains open under low velocity conditions. The dampers are opened by air pressure differential and closed by gravity. Galvanized steel frame with flange on the discharge side. WebAs the worldwide leader in manufacturing high quality air movement, control and conditioning products, Greenheck offers the most comprehensive line of ventilation equipment available including fans, dampers, louvers, …
Air Control Greenheck
http://mgmt.greenheck.com/products/category/4?lang=en_US WebFire dampers are UL 555 classified with a fire resistance rating of 1½ or 3 hours. Fire dampers fall into two categories: Dynamic rated – used with HVAC systems that remain operational during a fire emergency. Static rated – used with HVAC systems that shut down automatically during a fire emergency. how many weeks till christmas 2022 countdown
Model BD Backdraft Dampers Greenheck
WebBD-300 Series. The BD-300 series backdraft dampers mount vertically to allow horizontal airflow and prevent reverse airflow. Dampers in this series: BD-300 with a flange on intake, BD-320 with a flange on discharge and BD-330, which does not have a flanged frame. All dampers in this series open by air pressure differential and close by gravity. WebGreenheck’s damper interactive selection guide removes the guesswork. Find blade type, velocity, pressure, AMCA listings, submittals, drawings and more, all in one easy-to-use … Life Safety Dampers - Dampers Greenheck 1 1/2 Hour Fire Rated Dampers - Dampers Greenheck Commercial Control Dampers - Dampers Greenheck Dynamic 1 1/2 Hour Rated Dampers - Dampers Greenheck Combination fire and smoke dampers are used in heating, ventilation, and air … WebFace and Bypass Control Dampers. Damper Selection Guide. Which damper best fits the application? Greenheck’s damper interactive selection guide removes the guesswork. … how many weeks till chickens lay eggs