Hayward D.E.CX4000CHK Clamp Assembly Hardware Replacement Kit for Hayward Perflex Extended-Cycle D.E. Filter Clamp assembly hardware replacement kit Fits hayward perflex extended-cycle d.e. filter models i_pfppts, ec30, ec40, ec40ac, ec40c90 series Include 2 bolts, 1 nuts, 1 spacer and 2 washers Weight 1-1/2-pound