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 491/2"W X 51"L, Weight:123 Lbs 14 Oz, Bulk, Made In USA.