The Twister Es, Certified Energy Star? Power Pack Was Designed With Cost Efficiency In Mind For A Solution That Blends In Anywhere. Twister Es Hides The Ventilation You Need Beneath Your Custom, Built-In Canopy. An Optional Stainless Steel Liner Extends The Hood And Protects Your Cabinetry. 290 Cfm, 3-Speeds, Energy Star? Approved. Includes Energy-Efficient, Warm White Fluorescent Lighting.