• Weight: 4 oz. 

• Width: 6 1/16" 

• Length: 17 3/4" 

• Area: 75 sq. ft. 

• Top Style: 1 15/16" Open 

• Bottom Style: 1 15/16" Open 

The Unicel C-6407 R Compatible Pool & Spa Replacement Filter Cartridge is a spa or pool filter cartridge for the Onyx 75. The Filbur FC-3064 is a compatible replacement filter. These styles of pool or spa filters contain an open core from top to bottom, 1 15/16-inches in diameter. Along with proper filtration run times and balanced water chemistry, the pool filter cartridge maintains a healthy water environment by reducing bacteria and microorganism growth. The FC-3064 swimming pool filters are able to replace the following manufacturer part numbers: Unicel C-6407, Pleatco POX75, and Aladdin 17521.