Surepleat Side Access Filter Housing, Galvanized Steel Construction, Minimum Depth Unit Designed to Accomodate Ashrea Rated Filters, Suitable for Installation In a Duct or Next to an Air Handling Unit, Prefilters:24" X 24" X 4" X 4" (Not Included), Dims:12"H X 49 1/2"W X 51"L, Weight:123 Lbs 14 oz, Bulk, Made In USA.