125.5 square ft. (983.2 cubic ft.) - The Lifetime 11 ft. x 13.5 ft. Shed features: (2) large skylights, (2) shatter-proof polycarbonate windows, (2) screened vents, (2) 30 in. x 14 in. shelves, (5) 30 in. x 10 in. shelves, (2) peg strips, and a 10-year limited warranty. Floor and installation hardware included. Comes in (4) boxes.