BIHARNT 6CH-940 Spa Filter Cartridge – 45 sq ft, 2-Pack, SAE Thread, PWW50P3/Filbur FC-0359 Compatible

Overview

BIHARNT introduces the 6CH-940 Spa Filter Cartridge, a high-capacity replacement designed to fit a broad range of popular spa brands. This 45 sq ft cartridge is a two-pack, combining efficient filtration with straightforward maintenance. Its dimensions—8-1/4 inches long, 6 inches in diameter, with a bottom 1-1/2 inch SAE thread and a top circular handle—make it a practical swap for many standard filter housings. Note: brand names and part numbers referenced here belong to their respective owners; BIHARNT is an independent brand.

Smart filtration technology

The cartridge features trilobal filtration fabric paired with a 50-micron fine layer. The trilobal design increases the adsorption surface, helping capture a wide range of fine debris from hair and dust to sand and leaves. In real-world use, this can contribute to clearer spa water and may help reduce the frequency of chemical adjustments, depending on your setup.

• Three-fold surface area from trilobal fibers enhances capture efficiency.
• 50-micron layer targets fine particles for cleaner water.

Durability and ease of cleaning

Designed for frequent use, the built-in dirt-trapping structure holds debris securely while allowing quick rinsing. The filter uses thickened polyester fabric, a sturdy ABS end cap, and a reinforced core, which together boost durability and extend service life compared to standard cartridges.

• Strong construction resists wear and tear during routine cleans.
• Rinsing releases trapped debris with minimal effort.

Performance and support

Engineered for higher capacity and consistent flow, the 6CH-940 aims to sustain water clarity across spa cycles. BIHARNT backs the product with responsive customer support to assist with fit checks and replacements, helping you select the right cartridge for your needs.

Fit, specs, and what's included

Before ordering, verify key dimensions: 8-1/4\" length, 6\" outer diameter, bottom 1-1/2\" SAE thread, and a top circular handle. The package includes two filters, designed to pair with the listed brands and part numbers for flexible replacement options.

• Length: 8-1/4\"; OD: 6\"; Bottom: SAE 1-1/2\"
• Top: Circular handle; Filtration area: 45 sq ft
• Filtration fabric: Trilobal with 50-micron layer
• Package: 2 filters

What to expect in practice

With BIHARNT filters, you may notice smoother maintenance routines and clearer water over time. These are possibilities rather than guarantees, and results depend on your spa model, use, and water care routine.