High Efficiency Air Cleaner With 5" Media Filter, Airflow Range:300-1200, Efficiently Uses Less Energy Than a 40 Watt Bulb, Up to 15 Times More Effective Than a Standard Throwaway Filter Depending on the Filtration Option You Choose, Fits in Tight Spaces and in Virtually Any Position, Heavy-Duty Construction Assures Long-Life and Continued Reliability, Air Cleaners Designed for Flush Fit on Both Sides and Rear of Equipment Cabinet, All Service and Access is From The Front of The Air Cleaner, Air-Tite Door Construction Eliminates Air Leaks, Improves Air Quality and Operating Costs Low, Gasket Included With The Air Cleaner, Dims:14 1/2"H X 21"W X 7 1/2"D, Return Air Opening:11-7/8" X 18-7/8", Weight:14 Lbs 10.1 Oz,