Broan L500K Losone Select High Capacity Ceiling Mount Ventilation Fan 481 CFM Horizontal, 4.4 Sones. (AMCA) 473 CFM Vertical, 4.0 Sones 120V, 2.2 Amps Two Metal Centrifugal Blower Wheels Suitable for Kitchen Applications 4-1/2" X 18-1/2" Duct Connector Quiet Automatic Backdraft Dampers Painted White Enamel Steel Grille Can be Ducted Horizontally or Vertically. In-Line Ducting Available with Separate Adapter Ceiling Mount Models Available in 240V (Add EX to Model Number) and 277V (Add C to Model Number) Use Broan Electronic Variable Speed Control to Adjust Blower Speed and Sound Level (Available Separately) 2-1/4" X 12-1/2" X 11-3/4" High Housing Low Profile Metal Grille Finished with Painted White Enamel (21" X 14" ) Housing Lined with Acoustic Insulation