Spa Filter Darlly: 40353, Baleen: AK-3015, OEM: 17-2482, 817-3501, 25393, Pleatco: PRB35-IN , Unicel: C-4335 , Filbur: FC-2385, Diameter: 4-15/16", Length: 9-1/4"

Filter Specifications:

• Square Footage: 35 sq. ft.
• Media/Thickness: 3
• Diameter: 4-15/16"
• Length: 9-1/4"
• Top: 2-1/8" Hole
• Bottom: 2-1/8" Hole

Equivalent to:

• Pleatco: PRB35-IN
• Darlly: 40353
• Unicel: C-4335
• Filbur: FC-2385
• OEM: 17-2482, 817- 3501, 25393

This Filter Fits The Following Brands:

Rainbow Dynamic 35, Bullfrog, Clearwater, Leisure Bay

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