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United Spa Filters
These Filters Meet or Exceed Specifications Set Forth By This Spa Manufacturer.
 
Square Feet
Outer Diameter
Length
25
6 7/8"
11 7/8"
Shopping Options
Top
Bottom
3 1/2" Inner Dia
3 1/2" Inner Dia
Same as:
Unicel - C-6625
 Filbur - FC1426
Spa Filter
Spa Filter
Item# PJ25-4    No Core Needed

Square Feet
Outer Diameter
Length
37
5"
13 5/16"
Shopping Options
Top
Bottom
2 3/8" Inner Dia
2 3/8" Inner Dia
Same as:
Unicel - C-5635
 Filbur - FC1437
Spa Filter
Spa Filter
Item# PJ37-IN-4   No Core Needed

Square Feet
Outer Diameter
Length
50
4 15/16"
13 5/16"
Shopping Options
Top
Bottom
2 1/8" Inner Dia
2 1/8" Inner Dia
Same as:
Unicel - C-4950
 Filbur - FC2390
Spa Filter
Spa Filter
Item# PRB50-IN

Square Feet
Outer Diameter
Length
50
6"
8 1/4"
Shopping Options
Top
Bottom
Posi Grip Handle
1 1/2" SAE
Same as:
Unicel - 6CH-940
 Filbur - FC0359
Spa Filter
Spa Filter
Item# PWW50 P3L
Top Load Filter    1 1/2" Lock-In SAE Adptr  (Wide Thrd)
NOTE:  Handle Style Will Vary

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