Spa Filter Darlly: 40751, Baleen: AK-3051, OEM: 17-2632, Pleatco: PRB75 , Unicel: C-4975 , Filbur: FC-2395, Diameter: 4-15/16", Length: 20-1/8"

Filter Specifications:

• Square Footage: 75 sq. ft.
• Media/Thickness: 3
• Diameter: 4-15/16"
• Length: 20-1/8"
• Top: 2-1/8" Hole
• Bottom: 2-1/8" Hole

Equivalent to:

• Pleatco: PRB75
• Unicel: C-4975
• Filbur: FC-2395
• OEM: 17-2632
• Darlly: 40751

This Filter Fits The Following Brands:

Rainbow Dynamic, Hydor Pool, Dakota,

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