The Broan Ductless Bathroom Exhaust Fan with Snap-in Mounting and Replaceable Charcoal Filter processes air to eliminate odors where ductwork is impossible or impractical. It is an easy to install solution for half baths or where humidity isn't a concern. Included is a long lasting, easy to replace charcoal filter. The easy snap-in mounting makes for a fast and simple installation. Features snap-in mounting and a charcoal filter.