W Cooper Hub w/Standpipe [RS-3020 No Laterals] (3021A) uvgenerators This replacement is especially useful

This replacement is especially useful when the original controller has failed

A replacement spa or pool filter cartridge helps remove suspended debris so the water-care system can continue operating more effectively

The smooth face makes this Waterway internal especially practical where the goal is to maintain a refined visual profile without giving up the more advanced twin roto functionality

An antenna with BNC connection helps support signal communication in a compatible Maytronics Dolphin system

plumbing position

W Cooper Hub w/Standpipe [RS-3020 No Laterals] (3021A) uvgenerators This replacement is especially usefulW Cooper Hub w Standpipe [RS 3020 No Laterals] (3021A) is a W. Cooper Industries hub with standpipe for compatible RS 3020 No Laterals filter assemblies. The hub and standpipe help direct water through the filter system and are key internal components in proper filtration performance. This replacement version is listed without laterals, making it useful when the standpipe or hub requires replacement but the matching lateral set is handled separately.