Spa Filter Darlly: 40201, Baleen: AK-9002, OEM: 20241-238, Pleatco: PHC25P4 , Unicel: 4CH-20 , Filbur: FC-0125, Diameter: 4-5/8", Length: 6 3/4"

Filter Specifications:

• Square Footage: 25 sq. ft.
• Media/Thickness: 3
• Diameter: 4-5/8"
• Length: 6 3/4"
• Top: Handle
• Bottom: 1-1/2" MPT

Equivalent to:

• Pleatco: PHC25P4
• Unicel: 4CH-20
• Filbur: FC-0125
• OEM: 20241-238
• Darlly:  40201

This Filter Fits The Following Brands:

Saratoga Spas, DM Industires, Master

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