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. WebA: The damper location for all multi-blade models (FSD, SMD, VCD and DFD-210 series) is referred to as the A dimension (distance from end of sleeve to face of damper). The …
Round Commercial Control Dampers Greenheck
WebGravity Ventilators - Greenheck-USA 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. fmbc inc
Dampers FAQS Greenheck
WebGreenheck / Dampers / Backdraft Dampers / BD / Product # BD330-12X12 Backdraft Damper, Vertical Mount, Product # BD330-12X12 ... and ASHRAE 90.1 leakage requirements for non-motorized dampers; AMCA certified for Air Leakage and Air Performance; Width and height furnished approximately 0.125 in. under size ... The … WebA wide variety of products for use in intake, exhaust, or mixed air applications. Round control dampers are used in buildings to regulate the flow of air in an HVAC system. These can be used in intake, exhaust, or mixed air applications. The VCDR and VCDRM series are configurable to meet the requirements of most commercial applications. WebThe FSD-211 is a combination fire smoke damper with 3V-style blades. This model installs in walls, floors, or partitions and is rated for airflow and leakage in either direction. Pressure: Up to 6 in. wg. Velocity: Up to 2,000 fpm. Temperature: Up to 350°F. 10-Day Fixed Lead Times on Select Configurations. Watch Now to Learn More! Certifications: fmb construction supply