Model AC-45

Control Damper
Airfoil Blade

AC-45 control damper employs airfoil blades and a rugged hat channel frame to provide extremely low 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. Parallel.
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: 8.0 cfm/ft² @ 4 in. wg. (0.04 m³/s/m² @ 1.00 kPa)
                 4.0 cfm/ft² @ 1 in. wg. (0.02 m³/s/m² @ 0.25 kPa)

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