Traditional Greenhouse FramesOur multi purpose greenhouse cold frames provide shelter for year round growing, overwintering of crops or general storage for harvested crops or farm equipment. They are designed to be quickly and easily assembled. The single tube frame is manufactured from heavy duty 16 gauge, 1. 5 round galvanized steel. (24 frames are 14 gauge, 2 round galvanized steel.) Arch spacing every 4 feet Gothic arch design increases headroom while reducing snow build up