Spa Filter Darlly: 70521, Baleen: AK-9026, OEM: 1561-10, Pleatco: PTL55XW-F2M , Unicel: 7CH-552 , Filbur: FC-0465, Diameter: 7", Length: 10-1/2"

Filter Specifications:

• Square Footage: 52 sq. ft.
• Media/Thickness: 3
• Diameter: 7"
• Length: 10-1/2"
• Top: Handle
• Bottom: 2" MPT

Equivalent to:

• Pleatco: PTL55XW- F2M
• Unicel: 7CH-552
• Filbur: FC-0465
• OEM: 1561-10
• Darlly: 70521

This Filter Fits The Following Brands:

Dimension One Spas

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