Greenheck’s new Model GFSD-211 and GFSD-212 are out-of-wall combination fire/ smoke dampers, which the company says are designed for easy access through the grille to the damper, closure device and actuator. A separate compartment houses the actuator allowing for a shallow operating depth of 13.5 inches. Both models are qualified to velocities up to 2,000 feet per minute and pressure ratings up to 4 inches water gauge. Models GFSD-211 and GFSD-212 are available in vertical or horizontal mounts with a maximum size of 48 inches by 48 inches.
br>Greenheck, P.O. Box 410, Schofield, WI 54476-0410; (715) 359-6171; fax (715) 355-2399;