Foam filter (included) is washable for easy maintenance, Front-mounted solid state speed control remembers last setting used; Heat Sentry(R) automatically turns blower on to high when excess heat is detected, Ducted vertically through 3-1/4 x 10 ductwork; Damper/duct connector included, 24 in. fluorescent light with prismatic glass lens provides bright, even cooktop lighting (bulb not included), Easy to use slide control automatically recalls last setting used, Mounts into a full sized cabinet above the cooktop with only a slim, sliding glass drawer visible