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The Unicel C-4335 Cartridge is a 35 square foot replacement filter designed for Pentair Rainbow Dynamic IV and similar inline cartridge systems. Built with 219 pleats of strong polyester fabric, it traps fine particles and oils to maintain clean pool and spa water. Its 9-1/4″ length, 4-15/16″ outer diameter, and 2-1/8″ center openings replicate OEM sizing for a dependable fit. Compatible with multiple part numbers across brands, the C-4335 helps extend cleaning cycles and reduce chemical usage for efficient system performance.
Highlights
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Direct Replacement Cartridge: Equivalent to Pentair Rainbow 17-2482, R173431, Waterway 817-3501, Pleatco PRB35-IN, and Filbur FC-2385.
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35 Sq. Ft. Media Area: Offers 219 pleats of polyester fabric to capture dirt and fine particles effectively between routine cleanings.
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OEM-Grade Fit: Sized at 9-1/4″ × 4-15/16″ with 2-1/8″ openings, ensuring accurate installation in compatible filter housings.
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Built for Longevity: Rugged polyester and molded end caps provide resistance to pool chemicals and UV exposure for extended use.
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Improves Clarity & Balance: Boosts circulation and water quality while lowering chemical demand in spas or small pools.
Additional Info
This section details the Unicel C-4335, a 35 sq. ft. filter cartridge for Rainbow Dynamic 35. Learn how it fits, when to replace it, and how to order online with quick shipping.
Specs and Ordering Confidence
The C-4335 matches OEM dimensions: 9¼″ length, 4 15⁄16″ OD, and 2 1⁄8″ center holes. It replaces part numbers such as R173431, FC-2385, and PRB35-IN.
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Water Quality and Filter Life
The cartridge enhances circulation and reduces strain on pumps. Replace when worn or when cleaning no longer restores flow and clarity.
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Online Ordering and Delivery Options
Bundle with other chemicals or parts to meet shipping thresholds. Online retailers provide full cross-reference details for easy confirmation.
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Questions & Answers
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