... ,ideal for pools MINDER GHS Series Laminated Polyester reinforced with fiberglass sand are very latest in pool filter technology ,Molded of ... ;High rate tank is manufactured with laminated polyester reinforced with fiberglass ,molded of durable ,UV-resistant ,corrosion-proof and Gel Coat ... years life-time MINDER GHS Series Laminated Polyester reinforced with fiberglass sand filter