This mounting screw kit is designed to use with Hayward Pro Series and High-Rate Sand Filter models S140T, S144T, S164T, S166T, S170TSCP, S190TSCP, S166T, S166T1575XS, S166T1575XSN2. Also fits Hayward Star-Clear II and Micro Star-Clear cartridge filter models Modular Selecta System, C120, C200, C225. Also compatible with Hayward Perflex Extended-Cycle D.E. Filter models I_PFPPTS, EC301500 Series Systems, Series EC4075, EC4075UL. Includes 2 screws and 2 washers. Features: Mounting screw replacement kit Fits hayward pro series and high-rate sand filter models s140t, s144t, s164t, s166t, s170tscp, s190tscp, s166t, s166t1575xs, s166t1575xsn2 Also fits hayward star-clear ii and micro star-clear cartridge filter models modular selecta system, c120, c200, c225 Also compatible with Hayward Perflex Extended-Cycle D.E. Filter models I_PFPPTS, EC301500 Series Systems Includes 2 screws and 2 washers