Pentair Extension Collar | Ring Seat | 85002300 Pool Volleyball confirm your filter's model number

confirm your filter's model number on the label or owner's manual — the Clean & Clear Plus line includes multiple sizes (CCP320

Engineered to Unicel's precise OEM dimensional standards

inspect the drain port threads on the tank body for debris

Hayward Micro-Clear and Pro-Grid DEX4800DA

Pentair Extension Collar | Ring Seat | 85002300 Pool Volleyball confirm your filter's model numberThe Pentair Extension Collar (85002300) is the OEM replacement ring seat collar for Pentair skimmers, adjustable to accommodate deck thicknesses up to 3 inches. This collar bridges the skimmer body and the finished pool deck surface, adjusting the throat height to match the depth of the surrounding coping or concrete. When the original collar is cracked, warped, or missing, water can migrate behind the skimmer faceplate and into the deck substrate.