Hayward D.E.CX12866 Gauge Port Adapter Replacement for Hayward Perflex Extended Cycle Filter Gauge port adapter replacement Fits hayward perflex series extended cycle basic filter models ec65a, ec75a, i_pfppts, ec50c80x5s Also fits hayward perflex extended cycle d.e. filter models ec65, ec65a, ec75, ec75a, ec50a, ec50ac Weight 3-1/2-pound