Through-the-Wall Fans

?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. 110-200 CFM (2)
2. 351-500 CFM (2)
3. 50-100 CFM (1)

Duct Size

1. 4 inch (2)
2. 8 inch (2)
3. 6 inch (1)

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

1. No (1)

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

1. No (1)