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2420-OP & 2425-OP 4 Inch Stormproof Operable Louvers

The Alumavent 2420-OP/2425-OP is a four inch (102 mm) deep operable stormproof louver and is ideal for applications in which the available space does not allow for a separate stationary louver and damper. It's design provides excellent protection from water penetration with minimal static pressure drop while retaining a high free area. It is available with manual chain operator, manual hand crank or a variety of electric actuators.

Frame Thickness:
Frame Style:
Blade Thickness:
Blade Angle:
Blade Centres:
Blade Seals:
Standard Bird Screen:
Minimum Height:
Maximum Panel Width:
Maximum Panel Height:
Standard Finish:
Standard Method of Operation:
4" (102 mm)
Extruded 6063-T5 Aluminum
0.081" (2.06 mm)
2420 Channel Frame / 2425 1 1/2" Flange Frame
0.081" (2.06 mm)
Adjustable to 45 Degrees
6 1/8" (156 mm)
Vinyl blade edge seals, Santoprene jamb seals
1/2" x 1/2" galvanized, 19 gauge
16" (406 mm)
48" (1219 mm)
120" (3048 mm)
Pull Chain Operator
• Factory installed electric actuators (consult Alumavent for details)
Bird Screen: 1/2 x 1/2 Aluminum 0.063,
Insect Screen: 18 x 14 Mesh
Additional Finishes: Powder Coat Finish / Anodized Finish / Primer / Duranar Finish
• Non insulated blank off panels
• Insulated blank off panels (1" and 2")
• Extended sills
• Hand crank operation
• Jack shafting for operating multiple sections with one actuator
• Side shaft for remote operation or for actuators by others
• Filter racks