Spa Filter Baleen: AK-4020, OEM: 20043, Pleatco: N/A , Unicel: C-5434 , Filbur: FC-3634, Diameter: 5-3/16", Length: 19-5/8"

Filter Specifications:

• Square Footage: 58 sq. ft.
• Media/Thickness: 3
• Diameter: 5-3/16"
• Length: 19-5/8"
• Top: Closed w/string
• Bottom: 1-5/8" Hole

Equivalent to:

• Pleatco: N/A
• Unicel: C-5434
• Filbur: FC-3634
• OEM: 20043

This Filter Fits The Following Brands:

Marquis Spas, Everyday Hot Tubs, Hide

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