Ancona AN-1228 Slim SP2 Twin Motor 5" High 425 CFM 4-Speeds Under Cabinet Range Hood, 30", Stainless Steel 30-inch, under mount, 425 CFM - independently tested, twin motor, commercial grade 430 stainless steel Quiet 4-speed easy-to-use electronic 6-button motor controls with delayed auto shut off feature - automatically turns off after 10-minutes to remove all remaining cooking odors 2 x 2.55-watt LED lights  designed by Ancona, powerful, bright and eco-friendly, known to last up to 10 times longer than conventional lights Dishwasher-safe decorative stainless steel panel filters Top or rear venting options with 3.25-inch by 10-inch rectangular flange (included); external ventilation only; internal air recirculation not possible