This Unicel hot tub filter replaces the Pleatco PWW50L, Master Deluxe M40508 and Filbur FC-0172.

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-949:

Arctic Spas (2009+). Dynasty Spas, Four Winds Spa, Garden Leisure, Hydropool Industries, Master Spas, Premium Leisure, Rising Dragon, Streamline Spas, Sunrise Spas, Waterway Plastics and more.

Also known by these other OEM part numbers:

• 817-4050