Profile: Pool Cover Specialists National, Inc. manufactures and supplies swimming pool covers. We offer Infinity4000T recessed toptrack model, Mini-InfinityT automatic cover system designed for swim spas, PowerTrakT automatic safety cover and ManualTrakT system for small to mid-sized pools. Our Infinity 4000T recessed toptrack model fits both free-form and rectangular pools which can accommodate both new & existing pools. Our PowerTrakT is suitable for existing pools; it is designed to be mounted to the surface of an existing pool deck and does not require any electrical preparation.