Unicel UHD-SR137 Replacement Filter Cartridge for 137 Square Foot Sta-rite 135TX, 135GPM-TX, 135TXR, PTM-135,White Parts-&-Hardware Low profile design — Offers

Low profile design — Offers a low center of gravity for better balance

Regular use of Gold-N-Clear® will help your filter do its job more efficiently

Free Chlorine/Bromine/pH/Cyanuric Acid Combo 3 Test Series Disk (50)

x 7 inchesCompatible with:Pentair Pac Fab Clean & Clear Plus 420

Model Number: P-R266A-EN-C

Unicel UHD-SR137 Replacement Filter Cartridge for 137 Square Foot Sta-rite 135TX, 135GPM-TX, 135TXR, PTM-135,White Parts-&-Hardware Low profile design — OffersUnicel UHD SR137 Replacement Filter Cartridge for 137 Square Foot Sta rite 135TX, 135GPM TX, 135TXR, PTM 135,White Diameter: 8 11 16 inch; length: 31 1 4 inch Top end cap: open, 4 3 16 inch inner diameter; bottom end cap: open with 12 concentric slots, 4 3 16 inch inner diameter Pleat count: 216; filter media: 4 ounce reemay 2040; filter area: 137 square feet Get more efficient filtration and better water clarity with Unicel filters Longer time