Our hot tub spa filters meets or exceeds manufacturer specifications.
Filter Specifications:
- Square Footage: 4 sq. ft.
- Media/Thickness: 3
- Diameter: 2-3/4"
- Length: 5-1/8"
- Top: 1-1/16" Hole
- Bottom: 1-1/16" Hole
Equivalent to:
- Pleatco: PSB3.5
- Unicel: C-2305
- Filbur: FC-3120
- OEM: FC9903
- Darlly: 20035
This Filter Fits The Following Brands:
Spa In A Box, Spa2Go
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
Diameter: 5-1/8"
Length: 2-3/4"
Top: Open
Bottom: Open
Length: 2-3/4"
Top: Open
Bottom: Open
