Tier1 Replacement for Pentair Pool Filter Cartridge PRB35-IN – 4 Pack | Compatible with R173431, Unicel C-4335, Pleatco PRB35-IN, Filbur FC-2385 | 9-1/4" x 5" | Trilobal Fabric | Washable Cartridge

Key features

•COMPATIBLE MODELS – Replacement for Dynamic Series Systems 03FIL1300, 817-3501, R173431, Pleatco PRB35-IN, Filbur FC-2385, Unicel C-4335, PRB35-IN-3, Guardian 409-219, Aladdin 13501, SD-00198, Rainbow Dynamic 35, Waterway 35 In-line filtration cartridges
•DIMENSIONS FOR RELIABLE FIT – This 9-1/4" x 5" cartridge is engineered to fit seamlessly into compatible pool filtration systems, supporting consistent performance without leaks or gaps.
•TRILOBAL DIRT-LOCK MEDIA – Advanced trilobal fibers capture up to 40% more debris than standard round fibers, trapping dirt, hair, leaves, and fine particles while maintaining maximum water flow.
•TESTED TO NSF 50 STANDARDS – Independently tested to NSF protocols for performance and durability, supporting consistent water clarity and reliable filtration.
•ENGINEERED FOR CONSISTENT FLOW – Internal high-flow core delivers steady water circulation, protecting pump performance without restricting pressure or causing heater issues like some filters.

BrandTier1

CategoryCartridge Pool Filters

Size4-Pack

Tier1 Replacement for Pentair Pool Filter Cartridge PRB35-IN – 4 Pack | Compatible with R173431, Unicel C-4335, Pleatco PRB35-IN, Filbur FC-2385 | 9-1/4" x 5" | Trilobal Fabric | Washable Cartridge

List Price: $94.86$85.37DEALYou Save: $9.49 (10%)

Free shippingFree Returns – 30 daysFree Order CancellationSecure Payment2–3 Days DeliveryGet It June 25, 2026In Stock (2)No marketing spamNo account requiredFulfilment by FedEx / Amazon / UPS / ShipwirePayPal / Card Buyer Protection

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