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MIDWEST 17 and MIDWEST 22 STRUCTURES INCLUDE: . . <br /> • HOOPS 1 3/8" O.D., triple coated, cold rolled steel, .055" wall thickness, <br /> spaced 4' O.C. (Allied 50/55 structural steel tubing with a 50,000 <br /> P.S.I. yield,•55,000 P.S.I. tensile strength). <br /> • PERLtNS Same material as hoops but with swedged ends for connecting <br /> end to ond. <br /> • PERLIN Unique cross-connectors for fastening perlins to hoops with no <br /> BRACKETS holes to drill. Extremely strong and easy to install. Aluminum <br /> alloy with plated bolts. <br /> • <br /> • GROUND 1 5/8" O.D., .080 wall thickness, heavy galvanized <br /> POSTS <br /> • BOLTS AND Galvanized or zinc plated to prevent rust. <br /> NUTS <br /> Poly and Shade Fabric Sold Separately <br /> Baseboard and End Lumber Not Supplied <br /> FEATURES <br /> • All parts of the Midwest greenhouses that will be exposed to poly have smooth rounded <br /> corners to prevent chafing or cutting. <br /> • The low profile and smooth surfaces allow for easy covering and uncovering, <br /> • The engineered design gives the Midwest structurns strength to withstand high winds and <br /> heavy snow loads. <br /> • For long life and good appearance, all components are coated to prevent corrosion. <br /> • The design allows for adding to the length at any time with little effort. <br /> • The simple design facilitates quick set-up and even portability if desired. <br /> Clear Acrylic Finish <br /> Chromele Conversion Coating` <br /> Hol-Dipped Unllorm <br /> Zinc Galvanizing iiPt <br /> Atter Fabrication <br /> y Zinc Rich Interior <br /> Coating <br /> Cold Rolled Steel Providing <br /> • <br /> h. h T•ntlle-Yield Strength <br /> Allied?"' triple Coated Tubing <br />