Unicel Replacement Filter Cartridge 50 sf Rainbow In-Line | C-4950

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Unicel Replacement Cartridge – 50 sq ft | Model C‑4950 The Unicel C‑4950 is a high-capacity inline spa filter cartridge offering approximately 50 sq ft of pleated media. Designed f or Rainbow Dynamic Series, Waterway in‑line systems, and fits many spa brands including Cal, Artesian, Bullfrog, Sundance, Jacuzzi, Maax, and more. Key Features: 50 sq ft of 3 oz Reemay® spunbonded polyester media Approximately 212 pleats for enhanced dirt-holding and flow Dimensions: 4 15/16″ outer diameter × 13 5/16″ length Top and bottom open end caps with 2 1/8″ inner diameter Advanced free-flow core design improves circulation and cleaning efficiency Compatible cross-references: Pleatco PRB50‑IN, Filbur FC‑2390, plus many OEM models including Unicel C‑4326, C‑4625, C‑4637, etc. Technical Specifications: Model / SKU: C‑4950 Filtration Area: ~50 sq ft Pleat Count: ~212 Media Weight: 3 oz/yard polyester Dimensions: OD 4 15/16″ × Length 13 5/16″ End Caps: 2 1/8″ open inner diameter top & bottom Micron Rating: ~20 µm for fine particle capture Maintenance Tip: Gently rinse the cartridge with a garden hose—avoid pressure washers. Replace every 6–12 months or sooner if pressure increases or the media shows wear or discoloration. SKU: C-4950 Show more