50-watt Halogen bulbs provide bright lighting: two in 36 and 42 , three in 48 and 60 (not included), Optional 3" wall extension for greater coverage; eliminates expensive custom wall bump-outs, Powerful 1290 Max Blower CFM for quiet, dependable operation, Optional flue covers available to fit 8', 9' and 10' ceilings for standard or wall extension installation choices, 3-speed rotary control for convenient range of ventilation choices, Professional style baffle filters capture grease typical to outdoor cooking; easy to remove grease rail makes clean up easier, 18" tall wall-mount design with deep 27" depth to handle the heat and size of outdoor grills, Heat Sentry(R) detects excessive heat and adjusts blower speed to High automatically to maintain optimum ventilation, HVI certification gives you confidence this hood meets rated specs