Savener Hot Tub Spa Filter Cartridge 4CH-949 50 sq. ft. 2-Pack — 13.5" x 4-15/16", 50-micron, NSF/ANSI 50

Savener 4CH-949 is a 50 sq. ft. replacement hot tub and spa filter cartridge sold in a convenient two-pack to restore clear water and consistent flow.

Designed as a direct replacement for a wide range of OEM part numbers, this Savener cartridge fits many common spa and hot tub systems. It pairs a high-surface-area pleat design with reinforced end caps and a secure threaded base to trap fine particles while resisting deformation during regular use. The kit includes two identical cartridges so you can swap or keep a spare on hand for seasonal maintenance.

How does this cartridge improve my spa’s water clarity?

The Savener 4CH-949 uses trilobal pleated fiber to increase the contact area for filtration, so more debris is captured per pass through the filter. An upgraded 50-micron layer targets fine particles that ordinary filters can miss, helping the water look clearer between chemical treatments.

• 50 sq. ft. pleated surface captures hair, dust, pollen, and sand
• Trilobal fiber structure offers greater adsorption than flat fibers
• 50-micron filtration layer removes fine suspended solids

Will this part fit my hot tub or spa model?

This two-pack is built to replace many OEM numbers including FD2007, PWW50L, FC-0172 and others; check length and thread details against your existing cartridge to confirm fit. Key dimensions are length 13-1/2" and outside diameter 4-15/16", with a 2" female SAE bottom thread and a V-groove handle on top for easy removal.

• Length: 13-1/2"; Outside diameter: 4-15/16"
• Top: V-groove semi-circular handle for grip
• Bottom: 2" female SAE threaded connection

How durable and safe are these Savener cartridges?

Savener cartridges include reinforced ABS end caps and a robust core to resist cracking and collapse under normal spa conditions. Materials are tested to meet NSF/ANSI 50 safety standards, ensuring components are suitable for long-term water contact without leaching harmful substances.

• Reinforced ABS end caps reduce risk of breakage
• Thickened pleat media maintains shape and flow
• IAPMO-tested to NSF/ANSI 50 for material safety

What maintenance and usage tips should I follow?

Rinse the cartridge regularly with a hose to remove trapped debris and extend service life, and replace according to your spa manufacturer’s schedule or when flow and clarity decline. Do not backwash this cartridge; backwashing can cause cracks or permanent damage to the pleats and end caps.

• Rinse with clean water until runoff is clear
• Replace when pleats are clogged or damaged
• Never backwash the cartridge—use rinse only

Who is this for: The Savener 4CH-949 two-pack is intended for spa and hot tub owners who need an affordable, high-capacity replacement compatible with multiple OEM part numbers. It’s a practical choice for maintenance-minded homeowners, small facility operators, and anyone who wants a spare cartridge on hand to minimize downtime. If your spa uses a 13-1/2" cartridge with a 2" female SAE thread and you want improved fine-particle capture with NSF/ANSI 50-tested components, this replacement set is designed to meet those needs.