Double bars at the corners for enormous stability. Easy to assemble by one person. Full-length, extendable frame design, no screwing. One touch quick locks. Neoprene covers on the connections. Storm door with mosquito window. Eyelets in all four corners. 2 sides with center zipper. Back with center zipper, dual windows with mesh and storm panels. Includes T-pegs and carry bag. Dimensions: 237 (H) x 410 (W) x 410 (D) cm. Transport dimensions: 125 x 40 cm. Weight: 19 kg.