Unicel® 4CH-935 Hot Tub Filter (PWW35L, FC-0170)

Reg: $66.69
(You save $26.70 )
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Genuine Unicel Hot Tub Spa Filters. 

  • Part no: 4CH-935
  • Diameter: 4-15/16"
  • Length: 9-1/4"
  • Top: Handle
  • Bottom: 2" Female SAE Thread
  • 35 sq.ft.
  • Filter Media: Reemay
  • Brand: Unicel Premium

This Unicel hot tub filter replaces the Pleatco PWW35L and Filbur FC-0170.


Use a genuine Unicel brand hot tub filter to keep your hot tub water sparkling clean and beautiful. Made with Reemay filter media, the genuine Unicel brand hot tub filters are durable and effective at capturing the smallest of debris making it easier to take care of your hot tub water. Genuine Unicel hot tub replacement filters are available in a variety of sizes and built to OEM specifications, you’re sure to get a reliable hot tub filter that fits your hot tub perfectly. Use this replacement filter to replace your worn or damaged hot tub filter or as a back up to maximize the time between filter changes. Easy to install, the genuine Unicel replacement filter delivers OEM quality performance at a great price.


Manufacturers who use the 4CH-935:

Four Winds Spas, Master Spas, Nordic Hot Tubs, Rising Dragon, Waterway Plastics and more.


Also known by these other OEM part numbers:

  • 817-4035

Unicel filters ship from Ontario to all of Canada.

1 Review Hide Reviews Show Reviews

  • 5
    Filter fit, works great

    Posted by Robert Smith on 19th Mar 2019

    I've been searching for years or this filter and finally found one that fits. Price and delivery were excellent.