bouncepro 14ft steel flex enclosure replacement upper frame curved tube bounce pro the bouncepro 14' trampoline replacement enclosure upper frame tube with foam is part of the trampoline enclosure net. replace only the parts you need by replacing with genuine bounce pro parts. this upper frame tube is curved with one hole on each end. it is the replacement for the bounce pro model: tr146sfz-by, tr-146sfz-enc and tr-14es-wm. key part a. part number eut-14-6p-31.8. description: 14ft trampoline and "steel flex" metal ring enclosure combo. upper frame tube with foam. length metal upper frame: 41" width: 1.5" foam piece: 38" l x 2" width. it takes 6 to complete the trampoline. this replacement part is for model: tr-14es-wm, tr146sfz-by and tr-146fz-enc & tr-14es-wm. please note: the enclosure pole is two separate pieces, upper tube and lower tube. the lower tube is sold separately.