The Broan Elite RMIP Pro-Style Insert fits flush with the bottom of the cabinet or custom hoods. Centrifugal blowers from 500 to 1500 CFM with multi-speed control to provide quiet and effective performance. Halogen lighting complements the beauty of its fully-enclosed, easy to clean bottom. Especially designed to be installed in custom hood for use over residential commercial-style cooking surfaces Optional liners in 48" and 60" widths protect custom hoods. Optional liners allow depth adjustment from 23.5" to 26.5" Halogen lighting: 33" 2 x 50 watt; 45" 3 x 50 watt (PAR20) Bulbs Not Included Controls: rocker switches for lighting and on-off, knob for infinite speed Heat Sentry turns blower ON to HIGH speed when excess heat is detected.