Flow Hood Standard Features Powerful 110V Single Phase AC Motor with Three-Position Speed Control Aluminum Backward-curved Centrifugal Fan Replaceable HEPA Filter & Pre-filter 20 Gauge Steel Sheet Metal Housing with Glossy White Epoxy Powder Coat Finish 8ft Power Cord with USA Standard plug with ground Flow Hood Specifications HEPA Filter: Aluminum Alloy Frame with Micro Fiberglass Paper Media HEPA Filter Efficiency: H14 99.995% @ 0.3 microns Resistance: 0.327 inches W.G. @ 715 CFM Pre-Filter: Synthetic Fiber Pre-filter Efficiency: MERV 8 Average Air Flow: 715 CFM Average Air Velocity: 90 FPM Multi-speed Air Velocity Hi - 100 FPM Medium - 90 FPM Low - 80 FPM