Zhenx C-5374 PLBS75 Spa Filter Cartridge – 2 Pack, 75 sq ft, Unicel C-5374 Compatible

Upgrade your spa filtration with Zhenx C-5374 PLBS75

Designed as a reliable replacement for leisure spa systems, this 14.75-inch cartridge fits many common housings with top and bottom openings of 2 1/8 inches and a diameter of 5 5/16 inches. Its 75 square feet of filter area is built to support steady water flow as debris passes through the filtration path, helping you maintain clearer spa water between cleanings.

Why choose the Zhenx C-5374 PLBS75

With an emphasis on robust filtration, this cartridge uses an advanced three-leaf fiber material that targets everyday spa debris—leaves, hair, sediment, and sand—without requiring excessive maintenance. The pleated design is engineered to resist collapse and to remain effective through regular spa cycles, even when faced with routine, real-world use.

Key benefits at a glance

• Compatibility: works with PLBS75M, Unicel C-5374, Filbur FC-2971, 303433, 817-0015, R173600.
• Filtration capacity: 75 sq ft of filter area supports steady water flow and debris capture.
• Premium material: three-leaf fiber construction aims to capture leaves, hair, sediment, and sand more effectively than standard fabrics.
• Durable design: pleated structure penetrates deep into the filter for consistent performance over time.
• Maintenance-friendly: washable pleated fabric supports repeated use; clean when the pressure gauge reaches the preset value.
• 2-pack convenience: rotate between two filters to minimize downtime and extend each cartridge’s life.

What’s included and how it helps

• Two high-performance filters per pack for continuous spa filtration without interruption.
• Top and bottom openings of 2 1/8 inches enable easy installation in compatible housings.
• 14.75-inch length fits a wide range of leisure spa models.

Care and usage tips

Rinse the cartridge regularly and inspect for wear. When your spa’s pressure rises to the preset value, rinse or replace as needed. Alternating between the two filters helps keep water clearer and reduces downtime during maintenance.

Note: This is a compatible replacement designed to support your spa’s filtration system. Benefits described reflect the cartridge features and typical user experiences; results may vary.