Can Fan 736749 Q-Max 400 CFM 6

The q-max pro series fans are a quiet line of fans that feature the familiar max-fan & max-fan pro series motors integrated with acoustic foam liner into a muffler for maximum sound absorption. Unlike using most aftermarket mufflers this integrated design muffles both the fans intake & exhaust while also encapsulating the motor results in unrivaled airflow & whisper quiet operation. Q-max fans also utilize built-in hang tabs for additional isolation & easy installation. Some models include a built in 3-speed selector.