Spa Filter Darlly: 77518, Baleen: AK-60553, OEM: SC/TC 155, Pleatco: PH105-4 , Unicel: C-7685 , Filbur: FC-6110, Diameter: 7-1/2", Length: 19-1/2"

Filter Specifications:

• Square Footage:
• Media/Thickness: 4
• Diameter: 7-1/2"
• Length: 19-1/2"
• Top: 3-1/2" FPT
• Bottom: 2-5/8" Hole

Equivalent to:

• Pleatco: PH105-4
• Unicel: C-7685
• Filbur: FC-6110
• OEM: SC/TC 155
• Darlly: 77518

This Filter Fits The Following Brands:

Harmsco Filter Model BF105

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