Large Curtain For Portable Air Gun Range Dimensions: 59" x 83". The large portable air gun curtain is made from high density ballistic nylon. It isable to withstand multiple impacts, fired at a single 1/4" point, from pellets with a muzzle velocity of up to 600 fps. Velcro edging allows multiple curtains to be joined together making it possible to create a range of any desired width. Listing is for curtain only; frame and target boxes not included.