Seamless Construction 3-Speed Control Halogen Bulbs - 50 Watt Ambient and Brilliant High Heat Sensor Baffle Filters - Stainless Steel Enclosed Liners - Stainless Steel 16 Gauge Material 10" Square-to-Round Transition with Backdraft Damper Top Discharge Only Units 36", 42", 48", 54", 60", & 66" Accept CFM600C & CFM1200C In-Hood Blower Or CFMR1400 Remote Blower (Purchased Separately) Includes Choice of Duct Cover