The Tornado Mini Power Pack Was Designed With Cost Efficiency And Versatility In Mind. Tornado Mini'S Small Footprint Fits Under The Standard 12" Cabinet Depth - Or Choose One Of Our Optional, Adjustable-Depth, Stainless Steel Liners To Accommodate Custom Hood Enclosures From 17-1/2" To 20-1/2" Deep. Features Include Dual-Level Lumilight Led Lights, An Ultra-Quiet Blower, And A Recirculating Option For Ductless Installations.