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3960/3961/3965/3967 Insulated Extruded Aluminum Control Damper

The Alumavent 3960/3961/3965/3967 insulated, extruded aluminum control damper features a true thermal-break blade design and is suitable for use in low to medium velocity and pressure exhaust or intake applications. The standard co-extruded santoprene blade and jamb seals provide ultra low leakage characteristics. Optional ELT silicone seals and thermally-broken frame provide maximum performance for extreme low temperature applications. The 3960/3961/3965/3967 is available in both opposed and parallel blade configurations and is AMCA Certified for leakage and air performance.

Depth Blades Closed: 4" (101 mm)
Depth Blades Open: 6 1/8" (156 mm) max.
Material: 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, engineered thermoplastic
Seals: Co-extruded santoprene blade seal and jamb seals
Axles: 3/8" Aluminum Square Bar
Frame Style: 3960 and 3961 In-Duct Mount / 3965 Flange-to-Duct Mount / 3967 Front Flange
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 Blade
Maximum Panel Width: 48" (1219 mm)
Maximum Panel Height: 60" (1524 mm)
Maximum Panel Size: 20 sq. ft.
Leakage: Does not exceed 7 CFM/ft² (34l/s/m²) against 4" w.g. (1 kPa) differential static pressure at -40° F (-40° C)
Linkage: Concealed in Frame
Standard Finish: Mill
Standard Motor Installation: Side shaft direct drive, extendable up to 12"
Operating Temperature Range: -40º to +200º F
• Silicone Blade and Jamb Seals (Model Series 3900SI)
• Thermally Broken Frame (Model Series' 3965BF / 3967BF)
• Salt Water Construction (Model Series 3900SW)
• Belimo and Honeywell motors available (Consult Alumavent)
• Jack shafts
• End switch for signaling peripheral devices
• Locking Hand Quadrants
• Chain Operation for manual operation spring closed