ATEC Backyard Batting Cage - 40L ft. Kit includes 40-foot net, frame corners, unions, and more for constructing backyard or indoor batting cage Frame materials purchased separately (at local home improvement center) #21 net with 1.75-inch weather-treated, UV-resistant black polyester mesh Powder coated unions and corners constructed of 1.5-inch welded steel tubing Backed by a 1-year limited warranty