Spa Filter Darlly: 81504, Baleen: AK-70019, OEM: 25230-0150S,817-0150P, Pleatco: PWWPC150B-4 , Unicel: C-8416 , Filbur: FC-2576, Diameter: 8-15/16", Length: 28-3/16"

Filter Specifications:

• Square Footage: 150 sq. ft.
• Media/Thickness: 4
• Diameter: 8-15/16""
• Length: 28-3/16""
• Top: 4"" Hole
• Bottom: 4"" Hole

Equivalent to:

• Pleatco: PWWPC150B- 4
• Unicel: C-8416
• Filbur: FC-2576
• OEM: 25230-0150S, 817-0150P
• Darlly: 81504

This Filter Fits The Following Brands:

Sta-Rite PXC-150, Waterway Pro Clean

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