EXTREME SERIES: Our Extreme Series is WOW! “Heavy duty” construction, an impressive 7’6” deck height, XL deck room, beefy 4”x6” main beams, 4”x6” ladder legs & 4”x6”swing legs, thicker deck boards, stabilizing anti-racking brackets, adult size headroom, a 3 position swing beam that is 10’6” heigh for super long swing glide, and 15’ Super Slide. (10 Year Warranty)