Coverstar A3986 Molded Housing VL 122 Perim Encapsulation Fixed Height Kit. A Coverstar pool cover is the strongest way to prevent children and pets from getting into your pool when you can’t be there. An automatic pool cover slides on and off your pool with push-button convenience, to protect your pool, and most importantly, your loved ones. A Coverstar pool cover is the best protection available for your family and your pool investment!