Spa Filter Darlly: 50451, Baleen: AK-40042, OEM: 173584, 817-0014, Pleatco: PLBS50 , Unicel: C-5345 , Filbur: FC-2970, Diameter: 5-5/16", Length: 10-1/8"

Filter Specifications:

• Square Footage: 45 sq. ft.
• Media/Thickness: 3
• Diameter: 5-5/16"
• Length: 10-1/8"
• Top: 2-1/8" Hole
• Bottom: 2-1/8" Hole

Equivalent to:

• Pleatco: PLBS50
• Darlly:  50451
• Unicel: C-5345
• Filbur: FC-2970
• OEM: 173584, 817- 0014

This Filter Fits The Following Brands:

Rainbow, Waterway, Rec Warehouse

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