Cattle panels from tractor supply or your local farm store. 16' long but your cut offs can be used for ends. Actually built one this summer for use at a pond. Framed my ends from pt 2x4 and made swinging doors from sch 40 pipe covered with plastic netting. Didn,t really build it to be portable as once its set up it stays till end of goose season. Spread it out 5' at bottom tapering to 28" at top. Stand up thru grass brushing to shoot.