Control Damper - Aluminum Airfoil Parallel Blade - CD-51

Standard Construction

Frame: 5" x 1" (127 x 25) galvanized steel hat channel with interlocking corner gusset. Equivalent to 13 ga. (2.4) channel frame. Low profile head and sill are used on sizes less than 13" (330) high.

Blades: 6" (152) heavy gauge, dual wall extruded aluminum - airfoil. Parallel.

Axles: 1/2" (13) diameter plated steel hex.

Linkage: Concealed in frame.

Bearings: Synthetic.

Seals: PVC blade edge seals and flexible metal jamb seals.

Control Shaft: 1/2" x 6" (13 x 152) round drive axle with outboard shaft support bracket and bearing supplied on all single section dampers for field installation. Factory installed 3/4" (19) diameter jackshaft on all multiple section dampers.

Minimum Size: 6" x 5" (152 x 127)

Maximum Size:
Single Section: 60" x 72" (1524 x 1829)
Multiple Sections: Unlimited

Ratings

Leakage:
7.0 cfm/ft² @ 10.0 in. wg. (0.04 m³/s/m² @ 2.50 kPa)
5.0 cfm/ft² @ 4.0 in. wg. (0.03 m³/s/m² @ 1.00 kPa)
3.0 cfm/ft² @ 1.0 in. wg. (0.02 m³/s/m² @ 0.25 kPa)

Temperature: -25^oF to 180^oF (-32^oC to 83^oC)