Pentair 195611 Large Inner Diameter Washer For FNS/INS D.E. Filter; Quad D.E. Filter; 9/16 Inch ID x 1-3/16 Inch OD x 1/8 Inch T
- Pentair Quad DE Filters
- Pentair Pac Fab FNS DE Filters,Filters manufactured before March 1, 1993 contain a different clamp band assembly, item 12 . The correct P/N for these units is 181012 Filters manufactured before Sept. 1, 1992 contain a different non-spring design. Clamp components such as nuts, washers or bolts are no longer available for these non-spring design clamps. Do not attempt to interchange components between spring design and non-spring design clamps.