Replacement tube for your Classic Aqua Jump 20' Northwood's. Configuration: 14 sided polygon Tube overall diameter: 226" (18' - 10") 269sqft Tube height: 36" Trampoline overall diameter: 14ft Jump Mat: 142" diameter (110sqft effective jump surface) Pad: 14 section round (Blue or Green) 19" wide x 1" thick Bars: 14 H.D. galvanized steel Springs: 98 (8 1/4*)