Multi-Blade

Damper Hardware

For Parallel Dampers
Neva-Bind^® Duro Blade Kit

Duro Dyne’s exclusively patented “NEVA-BIND” Linkage Bracket will always align itself to assure smooth, non-binding operation even on the heaviest damper blades. Above, or at unequal distance from the blade axis, it is capable of adjusting itself all four ways, in-out, up-down, sideways and rotation. Each carton contains all necessary hardware for one blade of a multi-blade damper.

For Opposed Action Dampers
Opax^® Blade Kit

Opposed Action Dampers minimize turbulence and the control of the air is more linear. Exclusive Neva-Bind, 4 way self-adjustability which Duro Dyne “OPAX” kits feature, automatically compensate for any construction inaccuracies and maintains linear operation. The critical dimensions between linkage points are also maintained during operation. “OPAX” provides opposed action of damper blades and holds the blades rigidly in position eliminating rattle or flutter. These linkage kits contain all the necessary hardware for two opposed action damper blades.

Multi-Blade Damper Kit Submittal Form