This is an enclosed version of The 10x20Hercules. It is totally enclosed for better protection against the elements. The Hercules has an 8-leg 2", 20 gauge Powder Coated White Steel Frame for extra stability. The Enclosed Hercules comes with a 1-Year Prorated White Corner Drawstring Cover, and Sidewall Kit. The sidewall kit includes 1- zippered end wall, 1- solid end wall, and 2-solid sidewalls with flaps that wrap around the corner legs to enclose it completely.