Counterbalanced Backdraft Damper CBD6 Ruskin
STANDARD CONSTRUCTION
FRAME
6063T5 extruded aluminum .125" (3.2) wall thickness.
BLADES
6063T5 extruded aluminum .070" (1.8) wall thickness with extruded vinyl edge seals.
BEARINGS
Zytel.
LINKAGE 1/8 " x 1/2 " (3 x 13) aluminum tiebars.
COUNTERBALANCE
Zinc plated bar on blades (except top blade). Adjustable for final "on the job" setting.
FINISH
Mill.
MAXIMUM SIZE
Single section – 48"w x 52"h (1219 x 1321).
Assembly of sections – unlimited.
MINIMUM SIZE
6" w x 10"h (152 x 254)
TEMPERATURE LIMITS
-40°F (-40°C) minimum and +200°F (93°C) maximum.