Specifications include, but are not limited to: Backstops will replace the existing backstops and tie into the existing side fences. Successful contractor should conduct their own on-site measurements. Backstops should be 24 feet high, straight fence, no angled fence top. Backstop 4” galvanized terminal posts (4), SS-40 3” galvanized line post (1), SS-40 1-5/8” galvanized rails: top rail, middle rail, 2’ rail, 1’ rail, and bottom rail; total of five, SS-40. Bottom 8 feet; 6 gauge galvanized fabric, top and bottom of fence fabric to be selvage knuckled. Middle and Top 16 feet; 9 gauge galvanized fabric, top and bottom selvage knuckled. All posts shall extend a minimum of 4’ 6” below grade with a minimum of 12” diameter concrete footing – 2500 lb. PSI. Back stop to be installed 25’ behind home plate. Back stop height to be 24’, back to be 20’ wide with two 10’ wings.