Spa Filter Darlly: 50501, Baleen: AK-90106, OEM: 20041, 370-0237, Pleatco: PPM50SC-F2M , Unicel: 5CH-502 , Filbur: FC-0195, Diameter: 5-3/16", Length: 12-1/2"

Filter Specifications:

• Square Footage: 50 sq. ft.
• Media/Thickness: 3
• Diameter: 5-3/16"
• Length: 12-1/2"
• Top: Handle
• Bottom: 2" MPT

Equivalent to:

• Pleatco: PPM50SC- F2M
• Unicel: 5CH-502
• Darlly: 50501
• Filbur: FC-0195
• OEM: 20041, 370- 0237

This Filter Fits The Following Brands:

Marquis Spas (new style), Everyday Hot

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