Waterway In-Ground V/L Skimmer Square Collar (519-9517) valterraproducts High Flow (Cream) (521711) is

High Flow (Cream) (521711) is engineered specifically for cleaners & parts applications

For compatible larger-diameter plumbing installations

or no longer switching dependably

or no longer transitions cleanly between settings

Installed in the proper heater setup

Waterway In-Ground V/L Skimmer Square Collar (519-9517) valterraproducts High Flow (Cream) (521711) isThe Waterway 519 9517 square collar is designed for compatible in ground vinyl liner skimmer applications. A collar like this is useful because it helps restore the mounting and finishing structure around the skimmer opening, supporting cleaner fit and installation alignment. Version specific skimmer collars matter because in ground vinyl liner systems depend on the correct shape and mounting style. This Waterway square collar is a practical