Model CD-48

Control Damper
Insulated Airfoil Blade

CD-48 control damper employs insulated airfoil blades and a rugged hat channel frame to provide Class 1A leakage and exceptional air control in medium to high pressure and velocity applications.

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" x 14 gauge (152 x 2.0) equivalent galvanized steel - airfoil. Opposed.
Blade insulation carries an R value of 4.3.

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

Linkage: Concealed in frame.

Bearings: Synthetic.

Seals: Silicone blade edge seals integrally rolled and mechanically fastened to blades. 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:
One Blade: 8" x 6" (203 x 152).
Two blades: 8" x 10" (203 x 254).

Maximum Size:
Single Section: 48" x 72" (1219 x 1829).
Multiple Sections: Unlimited.

Ratings

Leakage:
Class 1A: 3.0 cfm/ft² @ 1 in. wg. (0.015 m³/s/m² @ 0.25 kPa)
Class 1: 4.0 cfm/ft² @ 1 in. wg. (0.020 m³/s/m² @ 0.25 kPa)
Class 1: 8.0 cfm/ft² @ 4 in. wg. (0.041 m³/s/m² @ 1.0 kPa)
Class 1: 9.7 cfm/ft² @ 6 in. wg. (0.049 m³/s/m² @ 1.5 kPa)