The Model 3960/3965 is our insulated aluminum control damper. Its design allows it to be used in either
an exhaust or intake system. The damper blade pivots in the middle, which makes it easier to open, by balancing
the positive and negative pressure on both sides of the blade. Our Co-extruded santoprene vinyl blade
seal and vinyl jamb seals allow the damper to seal tight. The 3960/3965 is available in both opposed blade and parallel blade.
Construction
Depth Blades Closed:
4" (101 mm)
Depth Blades Open:
6 1/8" (156 mm)
Material: Extruded
6063-T5 Aluminum
Frame Thickness:
0.081" (2.06 mm)
Blade Style: 3960-OB
Opposed Blade
3960-PB
Parallel Blade
Blade Thickness:
0.081" (2.06 mm)
Bearings: Dual bearing
system, consist of engineered thermoplastic bearings (Acetal)
Seals: Co-extruded santoprene
vinyl blade seal and viynl jamb seal.
Axles: 3/8" Aluminum
Square Bar
Frame Styles: Specify
"DM" for Duct Mount
Specify
"FM" for Flange Mount
Frame Insulation: Polystyrene Insulation
Blade Insulation: Blades are thermally broken.
High density polyurethane non-CFC foam (R-2.25)
Minimum Height: 8" (203
mm) Single Blade
15"
(381 mm) Multiple Blades
Maximum Panel Height:
60" (1524 mm)
Maximum Panel Width: 48"
(1219 mm)
Maximum System Pressure: 4"
w.g.
Linkage: Concealed
in frame
Standard Finish: Mill
Galvanized
Standard Motor Installation:
Side shaft direct drive, extendable up to 12"
Operating Temperature Range: -40 to +100 degrees
F
