Pentair Admiral S20 Gray Lock Down Lid || 85007413 Sirona Water Balancer This large outer cartridge is

This large outer cartridge is designed to use with Pentair Sta-Rite System 3 SM-Series 21-inch pool and spa cartridge filter

For further longevity

It also acts as a protective cover for the diaphragm chamber ensuring no outside influence can disrupt it during the cleaning process

or difficult to operate

balanced pressure

Pentair Admiral S20 Gray Lock Down Lid || 85007413 Sirona Water Balancer This large outer cartridge isPentair Admiral S20 Gray Lock Down Lid 85007413 Pentair Admiral S20 Gray Lock Down Lid (85007413) Essential Replacement for Admiral Skimmers Keep your Admiral Skimmer functioning at its best with the Pentair Admiral S20 Gray Lock Down Lid (85007413). This high quality, durable replacement part is designed to fit perfectly and securely seal your skimmer, ensuring consistent and efficient debris collection. Made from UV resistant, heavy duty plastic,