TOREAD PRB25-IN Spa Filter Replacement — 5x13 Drop-In, 25 Sq Ft, NSF/ANSI 50 Certified, Unicel C-4326 / Filbur FC-2375/FC-2370 (1 Pack)

Upgrade your spa filtration with TOREAD PRB25-IN

Meet a reliable, drop-in solution designed for a broad range of spa systems. The TOREAD PRB25-IN filter is built to help you enjoy cleaner water and easier maintenance, with a focus on durability and consistent filtration. The design emphasizes a balance between strong water flow and effective debris capture, so you can spend more time relaxing and less time worrying about filtration.

Key benefits at a glance:

• PHTA member – trusted quality aligned with industry standards for filtration performance and safety.
• NSF/ANSI 50 certified — tested materials and construction to support clean, fresh water in your hot tub or spa.
• 25% thicker filtration fabric and reinforced center support — designed for heavy chlorine environments and long-lasting use.
• Uniform trilobal fabric delivers higher filtration capacity (21–40% more) and efficient particle capture.
• End caps are engineered for durability, helping maintain strong water flow and resisting wear over time.
• Compatibility with popular models — PRB25-IN, Unicel C-4326, Filbur FC-2370/FC-2375, and other listed references.

What makes this filter different in practice

• Filtration area spans 25 square feet, enabling more effective cleansing of hairs, dust, and leaves from the water.
• Fabric technology uses trilobal fibers to improve particle capture, supporting clearer water with consistent flow.
• Durability reinforced end caps and a robust center support help the filter stand up to frequent spa use and chlorine exposure.

Specifications and fitment

• Length: 13 5/16 inches
• Outside diameter: 5 inches
• Top hole: 2 1/8 inches, bottom hole: 2 1/8 inches
• Filtration area: 25 sq ft
• Material: Trilobal filtration fabric
• Format: Drop-in, 5x13 style for quick swaps

Usage and care tips

Rinse the new filter thoroughly before first use, then install according to your spa’s instructions. Maintain balanced water chemistry and schedule routine filter checks to sustain water clarity and filter life. This product is a compatible spare part intended for quick, hassle-free replacements.

Quality and brand note

TOREAD is an independent brand that emphasizes alignment with industry standards and reliable filtration performance. The product packaging includes trust signals and references to recognized certifications and memberships that reflect the brand’s commitment to quality and consistency.