Pentair 53108900 Spring Barrel Nut Assembly Replacement Pool/Spa Cartridge and D.E. Filter
This spring barrel nut assembly is designed to use with Pentair Clean & Clear Plus pool and spa cartridge filters and also compatible with Pentair FNS Plus pool and spa D.E. filters. Measures 2-inch length by 1-1/4-inch height by 1-1/4-inch width.