Mounting version - Wall Mounted 860 CFM single centrifugal blower Stainless Steel Panel (Filterless Perimeter Suction) Six-speed electronic, touch sensitive control panel with LCD display Delayed power auto shut off (programmable 1-15 minutes) 30 hours cleaning reminder Four dimmable 35W halogen lights (GU-10 type light bulbs) Heavy duty 19 gauge stainless steel