Description: This multi-blade balancing damper is constructed of heavy-gauge galvanized steel. It is rated for pressure differential up to 4 inches of water column and velocities up to 2,000 feet per ...

A line of radial dampers, designed for T-bar (2 by 2, lay-in) diffusers in light commercial or institutional settings is available. The 3900 Series provides an alternative to standard butterfly ...