There's more under the hood when you pack the high performance version of Zephyr power pack into any customized vent hood. When your taste in kitchen design calls for a professional grade punch, the Tornado II is the clear choice. Power Pack Features: 1200 CFM 3 halogen lamps Automatic self-cleaning 3 var. speed selection Slider controls Max 6.0 sones Dimensions: Depth - 16 3/16" Height - 10" Net Width - 34 3/8" DUCTING: 8" vertical