The Pleatco PIN28 is a cartridge filter replacement for hot tubs and spas.

Specifications:

• Filter brand: Pleatco
• Diameter: 5 3/4"
• Length: 12"
• Top open hole: 1 7/8"
• Bottom open hole: 1 7/8"
• Filter area: 28 sq. ft.
• Cross-references: Unicel C-5330, Filbur FC-3748
• Part no. PIN28

** LIQUIDATION ** UNTIL QUANTITY LASTS

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

Returns & installation: Confirm your spa's 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.