Square Feet 320 sq ft External Dimensions Length: 40' Width: 8' Height: 8' 6" Interior Dimensions Length: 39′ ⅜″ Width: 7′ 8-⅛” Height: 7′ 9-⅝” Door Opening Width: 7’ 8-½” Height: 7’ 5-¾” Weight 8500lbs