Hayward AquaTrol HP PCB (GLX-PCB-TROL-HP) checkvalves The Waterway 519-6420 skimmer collar

The Waterway 519-6420 skimmer collar and lid mounting ring is designed for compatible Renegade applications and comes in white

included seals

The 21 inch size offers broad cleaning coverage

Useful when replacing a failed or unreliable original air switch

Includes 2-cup holder lid and screws

Hayward AquaTrol HP PCB (GLX-PCB-TROL-HP) checkvalves The Waterway 519-6420 skimmer collarThis Hayward AquaTrol HP PCB is built for compatible AquaTrol high performance salt chlorination systems that require board replacement. The PCB manages key system functions, making it essential to chlorine output control, status display, and overall salt system reliability. Part GLX PCB TROL HP should be matched to the existing AquaTrol HP model before installation. If the system shows control faults, loses output control, or fails to operate