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SMOKE DAMPER AIRFOIL BLADE – MODEL 661 CLASS II


Download Product Catalogue for SMOKE DAMPER AIRFOIL BLADE – MODEL 661 CLASS II

Features – U.L. rated 555S leakage CLASS II @ 350° F (176°) C Smoke Damper. STANDARD CONSTRUCTION

FRAME: 4” (102) deep, 8 gauge (3.1) extruded aluminum 6063-T5

BLADES: 6” (152) wide, double wall 12 gauge (2.0) extruded aluminum 6063-T5 in airfoil shape. (Top and bottom blades width may vary depending on damper height)

BLADE AXLES & BEARINGS
AXLES – 7/16”(11) Plated hex
BEARINGS – Bronze oil impregnated

LINKAGE
Plated steel concealed inside of jamb
Drive shaft has a 6” (152) shaft to mount operator

MAXIMUM SIZE
Unlimited, with mullions, structural bracing supplied by others

SEALS
Solid silicone blade edge and stainless steel jamb seals

MAXIMUM SINGLE SECTION
32” W x 48”H (813 x 1219)

MINIMUM SIZE
8”W x 8”H (203 x 203)

UNDERSIZED
1/4”(102) under ordered size unless specified Exact or Actual

FINISH
Mill

OPERATOR
Refer to UL approved actuator chart (Specify external or internal mounting)

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