This nut is designed to use with Pentair FNS pool and spa D.E. filters and also compatible with Pentair Quad pool and spa D.E. filters.
New Pentair 194997 Replacement Machined Filter Nut Nut replacement, 1/4" Fits Pentair FNS pool and spa D.E. filters Genuine Original Pentair Factory Part Also fits Pentair Quad pool and spa D.E. filters
Part Number: 194997 Product Condition: Brand New 1 Year Manufacturer's Warranty