This high-quality compatible spa and pool filter cartridge replaces the Filbur FC-3320 and Unicel C-8475 models. It delivers reliable performance and excellent water clarity by efficiently capturing debris, dirt, and fine particles — keeping your spa water clean and fresh.

Specifications:

• Replaces: Filbur FC-3320, Unicel C-8475
• Diameter: 8"
• Length: 13"
• Top open hole: 2-1/8"
• Bottom: 2" slip
• Filter area: 75 sq. ft.
• Part no. FC3320

To offer the most competitive pricing, a compatible generic filter may be substituted at our discretion.

Returns & installation: Confirm your filter housing dimensions before ordering, as filter cartridges are non-returnable once installed. Installation is a simple hand-tightened swap — no tools required.

FAQ

Q: How often should I replace this filter?
A: Most owners replace pleated cartridge filters every 12–18 months, or sooner with heavy use or visible wear.

Q: Is a generic equivalent the same quality?
A: Any substituted generic filter is chosen to match the OEM's dimensions and filtration area for equivalent performance.