Used dissolve

Pentek / Pentair 20″ × 4.5″

• Manufacturer: Pentair

20″ × 4.5″ Mixed‑Bed Deionization Cartridge Brand: Pentek / Pentair Type: Mixed‑Bed Ion‑Exchange Cartridge (DI / Deionization) Size / Format: 20″ length × 4.5″ outer diameter (≈ 508 mm × 114 mm) — “Big Blue 20...