Our 10' high Modern Tripod swings feature 3 legs on each end for added stability and strength. This 3 Bay Swing Set is sold complete with 6 molded rubber swing seats and hot dipped galvanized chains. This is a commercial grade Swing Set designed for Schools, Playgrounds, Parks and Recreational Areas. These swings must be installed in the ground using concrete footings.</p> All Legs and the top rail are made from 13 Gauge steel tubing, 2-3/8" in diameter that have been triple zinc coated for a smooth shiny uniform appearance and a 25% greater resistance to corrosion compared to standard galvanized pipe.</p> The fittings seen on the end and center are made from thick 7 gauge 2-7/8" powder coated tubing designed for both strength and good looks.</p> The included cut resistant Swing Seats are made of molded rubber; each with a steel plate insert. Seats measure 6" wide x 31.5" long x .25" thick.</p> Seats are supported by the included hot dipped galvanized 4/0 chain link with a working load limit of 670 pounds.</p> The included swing hangars are made from stamped steel with bronze bearings for a smooth swinging action.</p> This Three Bay Swing Set Includes 6 seats and weighs 575 pounds and has a Use zone of 40' x 53'.</p> Our Modern Bipod Swings are manufactured by SportsPlay and meet the CPSC (Consumer Product Safety Commission) playground safety guidelines, the ASTM (American Society of Testing Materials) playground safety standards and have been certified by IPEMA (International Playground Equipment Manufacturers Association). The manufacturer recommends that resilient safety surfacing that meets standard ASTM F1292 be placed under and around the structure and extend throughout the entire use zone. </p>