AQUALTRA Hot Tub Filter 2-Pack, 50 sq.ft. 6.75 x 8 in 2 in Male MPT — Washable High-Flow Cartridge

The AQUALTRA screw-in hot tub filter is a washable, high-flow replacement cartridge (50 sq.ft., 6 3/4" x 8", 2" male MPT) designed to fit a range of spa models and trap dirt, hair and debris for cleaner water.

This two-pack of AQUALTRA replacement filters provides an affordable way to restore circulation and filtration in many common hot tubs. Built from NSF-grade PET composite fabric, a polypropylene core and chlorine-resistant end caps, these cartridges balance durability with performance. They thread into standard 2" male MPT housings and match sizes used by several OEM part numbers, so you can replace aging or clogged filters quickly and get your spa back to optimal operation.

Will this filter fit my hot tub?

Measure your existing cartridge before ordering. The AQUALTRA filter measures 6 3/4" outer diameter and 8" length, with a 2" male MPT threaded base and a top handle for removal. It’s intended to be compatible with several commonly referenced part numbers, but always cross-check dimensions and thread type rather than relying solely on model names.

• Dimensions: 6 3/4" OD x 8" length
• Thread: 2" male MPT
• Top: molded handle for easy removal
• Compatible reference numbers: 6CH-502, PAS50SV-F2M, FC-0311, XLS-604, AK-90161, AR50, M60506

How well does it filter debris and contaminants?

AQUALTRA cartridges use a PET composite fabric with a "dirt-locking" weave that traps more fine particles than basic pleated fabrics. While not a disinfectant, the filter reduces visible contaminants like hair, leaves, sand and sediment so your circulation system and sanitizer work more effectively. Regular cleaning keeps capture efficiency high and extends cartridge life.

• Filtration area: 50 square feet of media for increased dirt capture
• Material: BPA-free PET composite filter fabric
• Captures: hair, leaves, dust, sediment and similar debris
• Helps maintain pump and heater efficiency by reducing clogging

Can I clean and reuse these filters?

Yes — these cartridges are washable and built to withstand repeated rinsing when cleaned properly. Remove the filter before soaking or using any chemical cleaners to prevent corrosion of metal components in your spa. For best results, rinse every two weeks or more frequently when the spa is used heavily.

• Reusable: designed for periodic rinsing and drying
• Cleaning tip: remove debris with a hose and let dry between uses
• Avoid: soaking in highly corrosive solutions without removing from spa
• Recommended interval: clean every 2 weeks under typical use

What materials and safety features does this cartridge include?

AQUALTRA filters are assembled from BPA-free components chosen for chlorine resistance and strength. The polypropylene core supports the filter media, while the end caps resist chemical degradation so the cartridge maintains shape and seal under normal spa conditions. The manufacturing materials meet widely used safety expectations for spa accessories.

• Core: durable polypropylene support
• Media: PET composite fabric, NSF-grade materials
• End caps: high chlorine-resistant polymer
• BPA-free construction for safer spa accessory use

Who is this for? This two-pack is suited for hot tub and spa owners who need an economical, direct-replacement cartridge that restores filtration flow and reduces visible debris. It’s aimed at DIY-minded buyers who can verify cartridge dimensions and thread type, and who want a washable option to extend filter life and protect circulation equipment. If you’re replacing a worn 6 3/4" x 8" 2" MPT cartridge or keeping spare filters on hand for seasonal use, this AQUALTRA set offers an easy swap-in solution.