Pentair Skimmer Extension Collar | U-3 Skimmer | WC37-503P Free-Standing Fountains Eliminates 1

Eliminates 1

IMPORTANT: QUANTITY REQUIRED — 2 KITS PER SYSTEM FOR SOME MODELS

Your Waterway Front Access Skimmer requires 2 cartridges for a complete service

4-water guns for extreme water fun

⚠️ IMPORTANT: POOL LIGHTING SAFETY — LICENSED ELECTRICIAN REQUIRED

Pentair Skimmer Extension Collar | U-3 Skimmer | WC37-503P Free-Standing Fountains Eliminates 1The Pentair Skimmer Extension Collar (WC37 503P) is the OEM replacement collar for the Pentair U 3 Skimmer series, designed specifically for vinyl liner pool installations. The extension collar raises the skimmer body to the correct height relative to the vinyl liner surface, ensuring the weir door operates at the proper water level and the skimmer face plate seats flush against the liner. When the collar is cracked, warped, or missing, the skimmer