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4100 Low Leakage Steel Control Damper

The Alumavent 4100 Series low leakage, standard performance control damper is specially engineered with a rugged one-piece frame that locks together without bolts, screws and rivets that can vibrate loose. Triple-vee blade design provides maximum strength. With its non-corrosive bearings, lock together frame and shake proof concealed linkage the 4100 series is very low maintenance and is an excellent choice for use in most low-leakage, low to medium velocity and pressure commercial applications.

Depth Blades Closed:
Depth Blades Open:
Blade Style:
Frame Style:
Minimum Height:
Maximum Panel Width:
Maximum Panel Height:
Maximum System Pressure:

Standard Finish:
Standard Motor Installation:
Operating Temperature Range:
5" (127 mm)
6 3/8" (162 mm)
Galvanized Steel
16 gauge continuous galvanized steel hat channel, reinforced corners
4100-OB Opposed Blade, 4100-PB Parallel Blade
16 gauge galvanized steel
Oilite self-lubricating bronze
Co-extruded santoprene vinyl blade seal and stainless steel compression spring jamb seals
3/8" square polycarbonate
Duct Mount
8" (203 mm) Single Blade, 14" (356 mm) Multiple Blade
48" (1219 mm)
72" (1829 mm)
5" w.g. for 12" (305 mm) wide damper
Does not exceed 10 CFM/ft² (50.8 l/s/m²) against 4" w.g. (1 kPa) differential static pressure at -40º F (-40º C)
Concealed in Frame
Mill Galvanized
Side shaft direct drive extendable up to 8"
-40° F (-40C) to +180° F (+82C)
• Belimo actuators (Consult Alumavent)
• Jack shafts
• End switch for signaling peripheral devices
• Hand Quadrants
• Chain Operation for manual operation spring closed