Spa Filter Baleen: AK-6089, OEM: 17-4981, 17-2811, Pleatco: PFAB80 , Unicel: C-7680 , Filbur: FC-1940, Diameter: 7-7/8", Length: 22-1/8"

Filter Specifications:

• Square Footage: 80 sq. ft.
• Media/Thickness: 4
• Diameter: 7-7/8""
• Length: 22-1/8""
• Top: 3-1/16"" Hole
• Bottom: 3-1/16"" Hole

Equivalent to:

• Pleatco: PFAB80
• Unicel: C-7680
• Filbur: FC-1940
• OEM: 17-4981, 17- 2811

This Filter Fits The Following Brands:

Pentair Pac-Fab Mytilus 80

Filter Glossary

As you can see in this graphic, when looking at a filter's threads from the side the difference is very obvious. Standard, sometimes called "MPT" or "Male Pipe" threads are smaller and have a higher number of threads than the S.A.E. style. The S.A.E. threads are large and are square in nature almost resembling a child's toy.

• MPT: Male Pipe Thread
• FPT: Female Pipe Thread

How to measure a hot tub filter references:

Spa Care Center or Pool Care Center