W Cooper Hub w/Standpipe [RS-3020 No Laterals] (3021A) andersonmfg 2 inch by 2 inch

2 inch by 2 inch format supports intended plumbing connection

Useful when the original pump is damaged or unreliable

That keeps maintenance more efficient and easier to manage

lid diameter

supporting circulation and dependable spa-system performance

W Cooper Hub w/Standpipe [RS-3020 No Laterals] (3021A) andersonmfg 2 inch by 2 inchW 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.