Counterbalanced Backdraft Damper CBD4 Ruskin
STANDARD CONSTRUCTION
FRAME
4" x 1" x 6063T5 (102 x 25) extruded aluminum .081" (2.1) nominal wall thickness.
BLADES
6063T5 extruded aluminum .070" (1.8) nominal wall thickness.
AXLES
1/2 " (13) diameter synthetic.
BEARINGS
Dustproof, ball bearings pressed into frame.
LINKAGE
1/8 " x 1/2 " (3 x 13) aluminum tiebars with
SS pivot pins.
SEALS
Extruded vinyl locked into blade edge.
MOUNTING
Vertical – Air flow horizontal.
Horizontal – Air flow up or down.
MINIMUM SIZE
6" w x 11"h (152 x 279)
MAXIMUM SIZE
Single section – 48"w x 52"h (1219 x
1321).
Multiple section assembly – Unlimited size.
