The Micro-Klean Pre-Filters from Filbur - The 42-178-1002:
RECOMMENDED PARTS:
17-175-5000 Cartridge and Grid Cleaner, Filbur, Pure and Clean, 32oz.
42-178-1000 Pre-Filter,Filbur Micro-Klean,Pltd,4 sqft,4 oz,w/Hose Adpt
42-178-1004 PreFltr,Filbur Micro-Klean,Disp,4-15/16"OD,13-1/2"l,w/HsAdpt