Spa Filter Darlly: 77515, Baleen: AK-60032, OEM: 1019301,73531, Pleatco: PCD75N , Unicel: C-7375 , Filbur: FC-3964, Diameter: 7", Length: 14-3/4"

Filter Specifications:

• Square Footage: 75 sq. ft.
• Media/Thickness: 3
• Diameter: 7"
• Length: 14-3/4"
• Top: Handle
• Bottom: 2-11/16" Hole

Equivalent to:

• Pleatco: PCD75N
• Darlly: 77515
• Unicel: C-7375
• Filbur: FC-3964
• OEM: 1019301,73531

This Filter Fits The Following Brands:

Caldera Spa, Watkins Mfg.

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