The Pleatco PJ37-IN-4 filter ensures superior filtration for pools and spas, efficiently capturing debris and contaminants to keep water clean and clear for an enhanced bathing experience.

Specifications:

• Filter brand: Pleatco
• For hot tubs and spas
• Diameter: 5"
• Length: 13 1/4"
• Top and bottom hole: 2 3/8"
• Cross-references: Unicel C-5635, Filbur FC-1437
• Part no. PJ37-IN-4

** 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 for equivalent performance.