Broan Evolution QP4 Series QP436SS 36" High Performance Under-Cabinet Range Hood 4 Halogen with Theater-Style Transitions Easy-to-clean Advanced Heat Sentry: Stainless Ultra quiet at less than 0.3 sones at Normal speed and only 5.0 sones at High speed, allows you to clear out cooking smoke and unwanted smells without disturbing the peace in your kitchen 150 CFM at Normal speed and 470 CFM at High speed provides the smoke and odor clearing power you need, when you need it. A 4-speed, soft-touch control with green LED indicators includes a 630 CFM Boost mode which is ideal for high heat cooking styles An integrated LED clock-timer lets you time certain dishes, delay-off allows the hood to operate an extra 10 minutes after cooking, and a 2-level ambient light sensor turns on when it senses low room light -- all to provide the master chef with convenience and confidence in the kitchen Four 50W Halogen MR16/GU10 lamps provide brilliant lighting over and around the cooktop with 4-levels of brightness, including theater-style transition (bulbs included), so you can see how things are cooking and clearly read the cookbook Choice of 3-1/4" rectangular or 7" round ducting ensures reliable discharge without repositioning the blower. The Evolution 4 can be installed as ducted only