This is a Round roof model. Heavy duty galvanized steel frame constructed with 2 3/4 15 gauge pipe.Includes side wind brace supports. All parts are pre-drilled for easy assembly. The zippered door openings on each end measure 16' wide and 8' when rolled up straight across OR the openings can be rolled up in a peak formation to get around a 10' 6 clearance in the middle section for a higher clearance. Ratchet tension system used for securing the main cover to the frame securely. Includes Heavy duty stake anchoring kit for securing building to the ground. Overall Size: 20'W 30'L x 12'H. We have parts on-hand and available should you need them. We have replacement covers available as well. We are working to establish a credible business in the fabric building industry. Other sizes available (single truss). Other sizes available (double truss). We also have access to buildings in a double truss configuration. The double truss configuration comes in a variety of sizes such as 40x80x20 & 50x100x22 & is even available in a standard straight wall. Contact me with your questions and I'll be glad to discuss them with you. Hoop barn, hoop building, cattle barn. The item "20x30x12 Canvas Fabric Tarp Storage Building Shop Shelter Metal Frame NEW" is in sale since Monday, November 30, 2020. This item is in the category "Business & Industrial\Modular & Prefabricated Buildings". The seller is "covermorebuildings" and is located in Chouteau, Oklahoma. This item can be shipped to United States.