Opposed blade control, extruded aluminum frame and blade construction, up to 3″ w.g
Parallel blade control, extruded aluminum frame and blade construction, up to 3″ w.g
Opposed blade control, formed steel frame and airfoil blade damper, Class I through III
Parallel blade control, formed steel frame and airfoil blade damper, Class I through III
Opposed blade control, steel blades and roll-formed frame. Manual damper – not for shut-off application
Parallel blade control, steel blades and roll-formed frame. Manual damper – not for shut-off application