Genuine Unicel Hot Tub Spa Filters. 

• Part no: C-6640
• Diameter: 6-15/16"
• Length: 19-3/8"
• Top: 3-1/2" Open
• Bottom: 3-1/2" Open
• 40 sq.ft.
• Filter Media: Reemay
• Brand: Unicel Premium

This Unicel filter is a compatible replacement for Pleatco PJ40-4 and Filbur FC-1440.

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 C-6640:

Jacuzzi Brothers and more.

Also known by these other OEM part numbers:

• 23-2214-01