The broan 3535 attic fan generates at least 120 volts of power and provides 1050 cubic feet per minute reaching up to 1 630 square feet of attic space.
Attic fan frames.
In contrast a house built using roof trusses will have an attic space full of angled web framing that connects the top chords analogous to rafters to the bottom chord which frames the ceiling beneath the attic space.
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The gasket between the venturi and plenum box reduces noise.
The 2 speed wall switch has a 12 hour timer.
Each exhaust shutter features durable galvanized steel aluminum or fiberglass frame construction with moisture and corrosion resistant stainless steel fasteners.
Cool attic cx30bd2spd belt drive 2 speed whole house attic fan with shutter 30 inch.
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These gravity operated exhaust shutters can be used with direct or belt driven exhaust fans and can help prevent air backflow when the fan is off.
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The fan is about 14 inches and made with a 22 gauge metal galvanized housing unit which reduces the sound flow.
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