A sturdy solution to indoor/outdoor storage of up to four 55-gallon drums. Weatherproof! Roll-top design allows it to be used in limited space or next to buildings where swing-open doors would be a problem. Takes up less than 25 square feet of floor space. Allows ample room for drum pumps. Used in conjunction with Poly-Slim-Line™ 6000 Product No. 5400-YE). Optional drain. Shipped knocked down only.