HWD 175sqft Star-Clear Plus Cartridge Filter Star-Clear Plus filters from Hayward deliver quality value and convenience in cartridge filtration. From precision engineering to its reinforced thermoplastic body, Star-Clear Plus filters work hard, achieving maximum water flow and superior filtration with minimal maintenance necessary. Trust Star-Clear Plus filters to perform in the most demanding application and environmental conditions. Thanks to its large filtration element, it utilizes a greater effective filtration are than cartridge filters of similar size and price range. For greater performance higher efficiency and crystal clear results, step up to Star-Clear Plus. Features Reinforced thermoplastic filter tanks made from extra durable glass reinforced copolymer material to meet the demands of the toughest applications and environmental conditions, including in-floor cleaning systems Single piece injection-molded base and body provides added strength for reliable, corrosion-free performance Single locking knob securely fastens head to filter tank, eliminating bolts or clamps Reusable extra-large cartridge element with new precision engineered extruded core provides extra strength and maximum flow Elevated, filtered water collector and debris sump prevents accidental by-pass of heavy debris to pool when cartridge is removed for cleaning