Pleatco Filter Cartridge 35 sq. ft. Rainbow Dynamic Series IV | PRB35-IN Vacuum Plates Locks in pH until next

Locks in pH until next refill

Note from Unicel: Replacement cartridge features a blue top end cap and orange bottom end cap

Sanitizer controls bacteria in spa water

and Sonoma Spa owners without a specific OEM part number

Pleatco Filter Cartridge 35 sq. ft. Rainbow Dynamic Series IV | PRB35-IN Vacuum Plates Locks in pH until nextThe Pleatco Advanced PRB35 IN is a 35 sq. ft. replacement filter cartridge engineered for Rainbow Dynamic Series IV and Waterway 35 in line spa filter systems. Built with Pleatco's Point Bonded Pool Filtration Fabric, it delivers a consistent pore structure that resists channeling and maintains reliable filtration performance throughout its service life keeping your spa water cleaner for longer between services. Specifications Filter Area 35 sq. ft.