Double Wide Instant Garage Expands Storage Options. Starting with a high grade steel, every frame pipe and connector goes through a proprietary 13 step Rhino Shield surface preparation process. Professional grade 2-3/8″ all steel frame, bonded with Dupont thermoset baked on powder-coated finish prevents chipping, peeling, rust and corrosion. Solid, 6-rib design comes complete with slip fit connectors and swedged tubing for easy assembly. Bolt hardware at every connection point ensures a solid structure.