Our hot tub spa filters meets or exceeds manufacturer specifications.
Filter Specifications:
- Square Footage: 40 sq. ft.
 - Media/Thickness: 4
 - Diameter: 7"
 - Length: 14-3/16"
 - Top: 3" Hole
 - Bottom: 3" Hole
 
Equivalent to:
- Pleatco: PA40-4
 - Unicel: C-7442
 - Filbur: FC-1228
 - OEM: CX410RE
 - Darlly: 70408
 
This Filter Fits The Following Brands:
Hayward Easy Clear C400
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: 7"
Length: 14-3/16"
Top: Open
Bottom: Open
Length: 14-3/16"
Top: Open
Bottom: Open