Pleatco Filter Cartridge 137 sq ft | Sta-Rite Posi-Flo II, PTM 135, 35 TX, 35 TXR | PSR137 Ladders & Slides Verify your spa's manufacture date

Verify your spa's manufacture date before ordering

Free & Combined Free chlorine is the active form of chlorine for disinfecting water

measuring a long 78"

Equipment protection: Prevents costly calcium phosphate scale that clogs heaters

no partial)

Pleatco Filter Cartridge 137 sq ft | Sta-Rite Posi-Flo II, PTM 135, 35 TX, 35 TXR | PSR137 Ladders & Slides Verify your spa's manufacture dateThe Pleatco Advanced PSR137 is a 137 sq ft replacement filter cartridge engineered for precision fit in Sta Rite Posi Flo II cartridge pool filters. Built with Pleatco Point Bonded Pool Filtration Fabric, it delivers consistent pore structure throughout the cartridge's service life resisting channeling and maintaining filtration performance from the first cycle to the last. At 31 1 4" long and 8 11 16" in diameter, the PSR137 meets the exact