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WhisperChoice DC 0.3-Sone 150.0-CFM White Lighted Bathroom Ventilator Fan (ENERGY STAR Certified)

Panasonic WhisperChoice DC 0.3-Sone 150.0-CFM White Lighted Bathroom Ventilator Fan (ENERGY STAR Certified)

4.6
348
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Will this fan work better with a 6 inch exhaust duct? currently I'm using a 4inch.


a 150 CFM fan must use 6" ducting. 4" ducting will not support the CFM the unit puts out.

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