Pentair Cartridge 520 sq. ft. | Clean & Clear Plus Filter 520 sq. ft. | R173578 PD165 Quantity Included Set of 2

Quantity Included Set of 2 Also Known As PKG188Z Fits Into

It includes Key Nos

Length 9" Outer Diameter 8" Top Inner Diameter 2 1/16" Bottom Inner Diameter N/A Material 3 oz

Perfect For:

Backup Valve opens every 3 minutes for 30 seconds allowing the cleaner to backup and change directions

Pentair Cartridge 520 sq. ft. | Clean & Clear Plus Filter 520 sq. ft. | R173578 PD165 Quantity Included Set of 2The Pentair R173578 is the OEM replacement filter cartridge for the Clean & Clear Plus 520 sq. ft. cartridge filter, restoring full filtration capacity to one of Pentair's largest residential cartridge filter systems. IMPORTANT: 4 CARTRIDGES REQUIRED PER FILTER The Clean & Clear Plus 520 sq. ft. filter requires 4 of these cartridges for a complete service. This listing is for one (1) cartridge. Order 4 to complete a full replacement set. IMPORTANT: