30" Inch Stainless Steel Under Cabinet Style. Ultra Slim Profile (only 3.5" inch thick compare with traditional 7~10" model) Air Volume: 760 CFM. Motor Rotation: 1650RPM. UL & CSA Approved. Dual Zone Dual Speed. Dimension: 30"x20.25"x3.5" Inch. Top Duct Size: 6" Round 5 year manufacturer warranty.