Betec Cad Damper, Terminal, Acoustic Control , Grill, Diffuser

Betec Cad Quadrant Fire Damper

Type : Quadrant Fire Damper With Melting Fuse

Fire Rating : 20 ~ 30 Series-         1½ ~ 3hour

Blade Type : 3V Single Skin; A : Parallel Operation

Construction : Galvanized Steel (GI) or Stainless Steel

QFD B-F-20 Series is a high performance UL 555 Classified fire damper with 1½hr. fire rating, 

operated manually with quadrant, installed horizontally (with blades running horizontally) and 

is rated for airflow in either direction.