The Broan PM390 Silver 390 CFM Power Pack Grill features a multi-speed fan switch and separate light switch. The fan is convertible between ducted and non-ducted discharge. Ducted mode uses a washable aluminum mesh filter. The non-ducted mode uses an optional, disposable charcoal filter. The PM390 is recommended for use with Models LB30, LB36, LT30, and LT36 liners.