Pleatco ULTRA-A1 Pool Filter Cartridge

Pleatco ULTRA-A1-PAK4 Advanced Ultra Pool Filter Cartridges (4 Pack) provide powerful filtration performance for residential swimming pools. Designed with Pleatco’s advanced filtration media and Free-Flow Core technology, these cartridges capture dirt and debris while maintaining strong water flow and longer filter cycles.

Each cartridge measures approximately 7 inches in diameter and 25.5 inches long with 3-inch open top and bottom holes, delivering reliable filtration and easy installation.

This 4-pack set replaces several popular pool filter cartridges and fits many Hayward and Pentair filter systems.

Compatible Pool Filters

• Pentair Purex CF-105

• Hayward SwimClear C4030

• Hayward SwimClear C4025

• Hayward SwimClear C4020

• Hayward SwimClear C4520

• Hayward Super-Star-Clear C4500

• Hayward Super-Star-Clear C4000

• Hayward Super-Star-Clear C4000S (stainless steel)

Replaces Cartridge Models

• Pleatco PA100N

• Pleatco PA106

• Pleatco PA112

• Unicel C-7487 / C-7488 / C-7489

• Filbur FC-1270 / FC-1226 / FC-1275

Key Features

• Advanced PurePleat filtration media

• Free-Flow Core technology for improved water circulation

• Captures dirt, debris, and fine particles

• Durable point-bonded filtration fabric

• Easy to remove and rinse for maintenance

• Long filter life with proper care

Perfect for in-ground swimming pools and spa filtration systems that require high-performance replacement cartridges.

Specs: 

• • Specifications: 
    • Outer Diameter: 7in
    • Length: 25 1/2in
    • Top Hole(Inner Diameter) : 3in
    • Bottom Hole(Inner Diameter): 3in