POOLPURE 5CH-45 Spa Filter Cartridge 10" x 5.31" Replacement, 50-Micron Trilobal Fabric, 45 sq ft

POOLPURE 5CH-45 is a direct-fit replacement spa filter cartridge engineered to restore water clarity by capturing fine debris with a 50-micron trilobal filtration fabric.

If your hot tub or spa uses cartridges like PFF50P4, Unicel 5CH-45, Filbur FC-2401 or similar, the POOLPURE 5CH-45 offers compatible dimensions and a performance-focused design. Built with a reinforced core, trilobal fiber weave, and dirt-locking technology, this cartridge replaces worn filters to reduce cloudiness, lower maintenance time, and extend service intervals without changing your plumbing or housing.

How does this filter fit my spa or hot tub?

The 5CH-45 is manufactured to match common replacement dimensions and thread specifications so it swaps in easily for the referenced models. Check the cartridge length and end-cap dimensions against your existing element before ordering.

• Length: 10 inches; outer diameter: 5 5/16 inches
• Top opening: 2 1/8 inches; bottom connection: 1 1/2" MPT
• Compatible reference parts: PFF50P4, Unicel 5CH-45, Filbur FC-2401, Baleen AK-90108, Legend 090164055428

What filtration performance can I expect?

This cartridge uses trilobal fibers and a dedicated 50-micron layer to trap fine particles and maximize surface area for dirt capture. It balances high cleanliness with easy rinsing so water clarity improves without drastically increasing backwash or rinsing time.

• Filtration area: 45 sq. ft. for more dirt-holding capacity
• 50-micron fine filtration removes hair, sand, dust, and small debris
• Trilobal fabric provides roughly three times the adsorption surface of conventional weaves

How easy is maintenance and cleaning?

POOLPURE’s dirt-locking design releases trapped particles during rinsing, making routine cleaning faster and more complete. The durable materials let you rinse and reuse the cartridge many times before replacement, saving labor and replacement costs.

• Patented dirt-locking structure improves rinse-out efficiency
• Thickened 4 oz. polyester fabric withstands repeated cleaning cycles
• Reinforced ABS end caps and integrated core reduce distortion and extend life

Is this product safe and certified for pool and spa use?

Yes — POOLPURE filters are tested for material safety and comply with recognized standards for pool and spa components. The construction focuses on long-term water exposure safety without contributing harmful substances to the water.

• Tested against NSF/ANSI 50 material-safety standards
• Manufacturing follows guidelines consistent with Pool & Hot Tub Alliance membership
• Used and validated in real training environments by athletes and media partners

Who this is for: The POOLPURE 5CH-45 is aimed at spa and hot tub owners who need a reliable, long-life replacement for popular 10" cartridge models and want improved fine-particle removal with minimal maintenance. It suits residential owners managing routine upkeep, operators of small commercial spas seeking consistent clarity, and anyone replacing a worn PFF50P4, Unicel 5CH-45, or Filbur FC-2401 cartridge. Before purchase, confirm your existing cartridge dimensions and thread type to ensure compatibility.