AQUALTRA Replacement Pool Filter Cartridge 150 sq. ft. 2-Pack — 31 1/8" x 10 1/16", Washable PET

AQUALTRA replacement pool filter cartridges are 150 sq. ft. washable PET filters designed to fit CC150, PAP150, Ultral-C4, R173216 and other compatible spa and hot tub housings, sold as a convenient two-pack.

Keep water clear and equipment running smoothly with these reusable cartridges from AQUALTRA. Constructed with a chlorine-resistant PET composite and durable end caps, the filters provide a large surface area for trapping hair, leaves, sediment and other particulates. The pair offers an economical way to restore flow and filtration performance for many common 150 sq. ft. filter housings — be sure to verify measurements and model compatibility before ordering.

Which models and dimensions does this cartridge fit?

The AQUALTRA cartridge matches a long list of 150 sq. ft. filter part numbers and housings. Key dimensions are 31 1/8" length and 10 1/16" outer diameter, with 6" top and bottom openings.

• Length: 31 1/8" (approx. 78.96 cm)
• Outer diameter: 10 1/16" (approx. 25.56 cm)
• Top & bottom opening diameter: 6" (approx. 15.24 cm)
• Compatibility: CC150, PAP150, Ultral-C4, PP-C4, C-9415, R173216, FC-0687 and similar 150 sq. ft. cartridges

How well will it filter debris and improve water clarity?

These cartridges use dense pleated PET fabric engineered to trap a wide range of particles. The construction increases surface area, helping the filter capture hair, dust, sand and plant debris more effectively than simple mesh or coarse media.

• 150 sq. ft. media for extended dirt-holding capacity
• Fine pleats capture small particulates while preserving flow
• Helps reduce visible debris and lowers load on pumps and heaters

Can I clean and reuse these filter cartridges?

Yes — the washable PET material is built for repeated rinsing and reuse. Periodic cleaning restores flow and filtration; the manufacturer recommends rinsing approximately every two weeks under typical spa or hot tub use.

• Washable PET fabric — rinse with a hose or soak for deeper cleaning
• Remove cartridge before using chemical cleaners to avoid corrosion
• Regular maintenance extends cartridge life and system efficiency

Are these cartridges safe and what materials are used?

The cartridge cores and end caps are made from BPA-free, chlorine-resistant materials designed for aquatic equipment. The PET composite media resists degradation from pool chemicals and prolonged exposure to water when used and cleaned properly.

• PET composite pleated media — durable and chemical-resistant
• High chlorine-resistant end caps for longer service life
• Manufactured without BPA-containing components

Who is this for: This two-pack of AQUALTRA 150 sq. ft. replacement cartridges is for hot tub, spa and pool owners who need an exact-size replacement for 31 1/8" x 10 1/16" filter housings. It suits technicians and DIY owners seeking a cost-effective, washable option to restore filtration in common model lines such as CC150, Ultral-C4 and other compatible part numbers. Before purchasing, confirm your existing cartridge's measurements and connection type to ensure fit.