Product Description

• Manual air relief assembly replacement
• Fits Pentair Nautilus Plus pool/spa D.E. filter models NSP-24, NSP-36, NSP-48, NSP-60, NSP-72
• Also fits Pentair FNS, SM & SMBW 4000 Series pool/spa D.E. filter models FNS 24, FNS 36, FNS 48, FNS 60, 4060