Hayward Econo Base with Loop for Perflex Extended-Cycle DE Filters | EC1161LK Diving Board Parts and vacuum plates — to

and vacuum plates — to the threaded tip of compatible pool poles

000 gallons with cartridge filters

add 1 oz of Chitosan Clarifier for every 10

That baseline reading is your benchmark — most manufacturers recommend servicing the filter when pressure climbs 8–10 PSI above that clean-start figure

Manual cleaning mode: Comes with a pole attachment

Hayward Econo Base with Loop for Perflex Extended-Cycle DE Filters | EC1161LK Diving Board Parts and vacuum plates — toThe Hayward Econo Base with Loop (EC1161LK) is the OEM replacement modular base for Hayward EC40 and EC50 Perflex Extended Cycle DE filters, restoring the structural foundation and plumbing loop position that keeps the filter housing properly supported and oriented. Specifications Hayward Part Number EC1161LK UPC 610377025423 Poolaroo Pro Tip When replacing this base, inspect the filter tank's lower O ring and drain plug for wear at the same time.