Model Sequence 1220M and 1220M-3 "3-in-1" Modulating Hearth/Smoke Dampers are already engineered to provide high quality containment in fireplace and smoke situations. The addition of volume Regulate utilizing a modulating actuator eliminates the need and price of a different Command damper. Check out Merchandise Facts (2.0) equivalent laminated blade that https://heavydutystainlesssteelda91233.blogozz.com/35942689/little-known-facts-about-dampers-for-industrial-sector