Advantages 1.Low cost and easy to shipping (Save freight); 2.Light steel structure (reliable frame); 3.Flexible layout and design; 4.Easy and quick assemble and no need special trained labors; 5.Extensive and flexible application. 5 Year Structural Warranty 1 YEAR LEAK GUARANTEE- These are wind and water tight • No leaks or holes! Complete pest and rodent proof • Good solid floors no soft spots • Doors and gaskets work properly • Minimal surface rust and dings! Contact us for more info