U-shaped bolts are needed to secure the Cat-Proofer existing fence extender to your chain link fence posts. Most chain link fence posts are either 1 5/8” in outer diameter or 2” in outer diameter. Many chain link fences contain both having the 2” O.D. posts at gates and/or corners. We offer U-bolts available in pairs (one pair will hold one Cat-Proofer or Dog Arm to one chain link post) to fit both sized posts. Pairs of U-bolts (in several sizes) are available.
