Spa Filter Baleen: AK-6020, OEM: 2301750, 244-0100, Pleatco: PMT100 , Unicel: C-7419 , Filbur: FC-1638, Diameter: 7-1/2", Length: 21-7/8"

Filter Specifications:

• Square Footage: 100 sq. ft.
• Media/Thickness: 4
• Diameter: 7-1/2"
• Length: 21-7/8"
• Top: 2-15/16" Hole
• Bottom: 2-15/16" Hole

Equivalent to:

• Pleatco: PMT100
• Unicel: C-7419
• Filbur: FC-1638
• OEM: 2301750, 244-0100

This Filter Fits The Following Brands:

Martec

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