Spa Filter Baleen: AK-60901, OEM: SC/TC 155, Pleatco: PH155-4 , Unicel: C-7697 , Filbur: FC-6115, Diameter: 7-1/2", Length: 29-1/16"

Filter Specifications:

• Square Footage:
• Media/Thickness: 4
• Diameter: 7-1/2"
• Length: 29-1/16"
• Top: 3-1/2" FPT
• Bottom: 2-5/8" Hole

Equivalent to:

• Pleatco: PH155-4
• Unicel: C-7697
• Filbur: FC-6115
• OEM: SC/TC 155

This Filter Fits The Following Brands:

Harmsco Filter Model BF155

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

How to measure a hot tub filter references:

Spa Care Center or Pool Care Center