Our special Snap-Lok ladder frames are made of 1.90" O.D. x .049" wall, 304 stainless steel tube with mirror finish. All bends are 6" radius. Frames extend from the pool wall 6 1/2" on center. Upper ends of the frames are secured to pool deck with two anchor sockets on 20" center. Stainless steel hinge brackets are bolted to ladder frames with stainless steel bolts and acorn nuts. Lower ends of the frames are bent to meet the pool wall and fitted with two white rubber bumpers (WRB-100A)