Unicel 4CH-935 Hot Tub Filter For Master Spas

The Unicel 4CH-935 is a premium replacement filter with a closed top and coarse SAE 2" female threads on the bottom. It fits select Master Spas and Nordic Spas models. Since filter sizes can vary for the same spa model depending on year and features, it’s important to confirm the dimensions of your existing filter before ordering to ensure a proper fit.

Specifications:

• Part Number: 4CH-935

• Diameter: 4-15/16"

• Length: 9-1/4"

• Top: Handle

• Bottom: 2" Female SAE Thread

• Media Area: 35 sq. ft.

• Filter Media: 3 oz. Reemay® premium trilobal fabric

• Pleat Count: 219

Compatible Replacements:

• Waterway 817-4035

• Pleatco PWW35L

• Filbur FC-0170

Long-Lasting Performance:
While most hot tub filters require replacement every 6–12 months, the Unicel 4CH-935 is crafted with high-quality materials for extended durability. With proper cleaning and maintenance, it can last up to two years or more, depending on usage.