Hot Spring Spa Filter Darlly: 60301, Baleen: AK-5005, OEM: 31489, Pleatco: PWK30 , Unicel: C-6430 , Filbur: FC-3915, Diameter: 6", Length: 10-1/2"

Filter Specifications:

• Square Footage: 30 sq. ft.
• Media/Thickness: 4
• Diameter: 6"
• Length: 10-1/2"
• Top: 1-15/16" Hole
• Bottom: 1-15/16" Hole

Equivalent to:

• Darlly: 60301
• Pleatco: PWK30, PWK30-4
• Unicel: C-6430
• Filbur: FC-3915
• OEM: 31489

This Filter Fits The Following Brands:

Hot Springs, Watkins Mfg., Hot Spot, Microban

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