Broan RMIP33 33" Pro-Style Hood Insert Blower sold separately. Available blowers range from 500 to 1500 CFM. 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