Heating & Cooling Clearance

?CFM stands for Cubic Feet per Minute. It indicates how much air the ventilation fan can remove from a room in a minute. Be sure to match the CFM to the size of your room.CFM

1. 50-100 CFM (2)

Duct Size

1. 4 inch (1)
2. 3 inch (1)

?These are bath fans which also have a light incorporated into their housing.Fan With Light

1. No (2)