A: The black shroud is 24" * 24".
A: No extension cords should be used with that fan.
A: You could, but please check local building codes to make sure this is ok.
A: This is meant to be mounted on a gable vent. We recommend your install this on a 16" * 16".
A: have to check manual if it is in a wet area. otherwise i love this unit. had for 2 yr now venting a 40 x 60 10' high barn. auto on off hi and low winter and summer settings and humidity setting all automatic
|Name||2940 CFM Smart App Controlled 2-Speed Gable Mount Attic Fan||3368 CFM Silver Electric Powered Gable Mount Shutter Fan/Vent||3368 CFM 20 in. Silver Aluminum High Speed Gable Mount Shutter Exhaust Fan||5088 CFM Silver Electric Powered Gable Mount Shutter Fan/Vent|
|Features||Speed Control||Automatic Shutter,Corrosion Resistant,Thermostat Controlled,Weather Resistant||Weather Resistant||Automatic Shutter,Corrosion Resistant,Weather Resistant|
|Power Type||Electric Powered||Electric Powered||Electric Powered||Electric Powered|
|Net-Free Area (Sq. In.)||0||21||200||31|
|Drive Type||Direct Drive||Direct Drive||Direct Drive||Direct Drive|
|Rough Opening Width (In.)||18 in||21 in||23.4 in||31 in|
|Mounting Position||Gable Mount||Gable Mount||Gable Mount||Gable Mount|
|View Product||View Product||View Product||View Product|