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Attic fan frames.
The fan is about 14 inches and made with a 22 gauge metal galvanized housing unit which reduces the sound flow.
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.
Designed with preassembled wood frames and thermally protected 2 speed motors these horizontal mount fans effectively cool and ventilate an entire home by removing hot humid air through the attic and drawing in cooler air from outside.
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An attic framed with rafters will provide a fairly open space that can be used for storage or even converted to living space.
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The gasket between the venturi and plenum box reduces noise.
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.
Each exhaust shutter features durable galvanized steel aluminum or fiberglass frame construction with moisture and corrosion resistant stainless steel fasteners.
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.
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