Spa Filter Darlly: 40504, Baleen: AK-3022, OEM: N/A, Pleatco: PDV50 , Unicel: C-4350 , Filbur: FC-3072, Diameter: 4-5/8", Length: 23-3/4"

Filter Specifications:

• Square Footage: 50 sq. ft.
• Media/Thickness: 3
• Diameter: 4-5/8"
• Length: 23-3/4"
• Top: 2-1/16" Hole
• Bottom: 2-1/16" Hole

Equivalent to:

• Pleatco: PDV50
• Unicel: C-4350
• Filbur: FC-3072
• Darlly: 40504

This Filter Fits The Following Brands:

Grecian Spas

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