Pentair Tank Lid, 48 sq. ft. Filter | FNS Plus | 170021 PWWB ENZYME Oil-Out leaves no residue

ENZYME Oil-Out leaves no residue and will digest oil from the filter leaving it much cleaner which keeps your pool water cleaner loner

One-Step Application: Pour directly into skimmer - no mixing or measuring required

Note from Unicel: If your existing cartridge is labeled C-5303

303 Stainless Steel Threaded Shaft

and remove

Pentair Tank Lid, 48 sq. ft. Filter | FNS Plus | 170021 PWWB ENZYME Oil-Out leaves no residueThe Pentair Tank Lid, 48 sq. ft. Filter (170021) is the OEM replacement lid for the FNS Plus 48 sq ft D. E. filter model FNS PLUS 48. This is a direct factory matched replacement that restores the pressure retaining top closure of the filter tank to original specification. The tank lid forms the sealed top of the FNS Plus filter tank. A cracked, warped, or seal compromised lid allows system pressure to escape, reducing filtration efficiency and