EXT external mount bathroom fans are the perfect solution when space restrictions prevent the use of in-line duct fans. The simple through-the-wall solution of EXT external mount bathroom fans can be sidewall mounted on the exterior of a building, allowing easy access to the fan. EXT fans utilize a quiet and energy efficient external rotor motor. EXT external mount bathroom fans are available in three standard duct sizes: 4″, 6″ or 8″, with airflow capacities ranging from 118 cfm to 420 cfm.
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The following recommendations follow minimum guidelines published by the Home Ventilating Institute (HVI):
Note: For proper sizing, the static pressure (SP) needs to be calculated. For typical applications, you may read from the 0.2” SP column for a selection.
EXT External Mount Duct Fans are the perfect solution for bathrooms located in hard to vent spaces where and in-line duct fan cannot be used.
Other applications include:
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