Spa Filter Darlly: 40251, Baleen: AK-30055, OEM: 176380, Pleatco: PIC25 , Unicel: C-4329 , Filbur: FC-0210, Diameter: 4-1/4", Length: 12"

Filter Specifications:

• Square Footage: 25 sq. ft.
• Media/Thickness: 3
• Diameter: 4-1/4"
• Length: 12"
• Top: Handle
• Bottom: 2" Hole

Equivalent to:

• Pleatco: PIC25
• Unicel: C-4329
• Filbur: FC-0210
• OEM: 176380
• Darlly: 40251

This Filter Fits The Following Brands:

Icon Spas #410, Weslo, Image

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