GL Pool Products 30-BKIT-WHT White Protect-A-Pool® Above Ground Pools Fence Add-On Kit "B". GLI'S PROTECT-A-POOL® Above-Ground Fence adds a new level of security to above ground pool safety. The modular fence is made from sturdy yet lightweight, rustproof resin and is easily able to be installed by pool owners with little effort. The attractive fencing keeps toys, balls and floats within the pool and at the same time minimizes pool use by unauthorized guests and pets. The PROTECT-A-POOL® fencing system fits most popular above ground pools and can be purchased in only as many sections as needed.