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Thermo Spa Filters
These Filters Meet or Exceed Specifications Set Forth By This Spa Manufacturer.
 
Square Feet
Outer Diameter
Length
10
4 1/4"
4"
Shopping Options
Top
Bottom
2 1/16" Inner Dia
2 1/16" Inner Dia
Same as:
Unicel - C-4310
Filbur- FC3077
Spa Filter
Spa Filter
Item# PWW10
Skim Filter

Square Feet
Outer Diameter
Length
17.5
4 15/16"
4 5/8"
Shopping Options
Top
Bottom
2 1/8" Inner Dia
2 1/8" Inner Dia
Same as:
Unicel - C-4401
Filbur - FC2386
Spa Filter
Spa Filter
Item# PRB17.5SF PR    Comes in Sets of Two (2)
Skim Filter

Square Feet
Outer Diameter
Length
25
4 15/16"
6 5/8"
Shopping Options
Top
Bottom
2 1/8" Inner Dia
2 1/8" Inner Dia
Same as:
Unicel - C-4405
 Filbur - FC2387
Spa Filter
Spa Filter
Item# PRB25SF PR    Comes in Sets of Two (2)
Skim Filter

Square Feet
Outer Diameter
Length
25
6"
7"
Shopping Options
Top
Bottom
Posi Grip Handle
1 1/2" MPT
Same as:
Unicel - 6CH-26
Filbur - FC0310
Spa Filter
Spa Filter
Item# PTL25W-SV A4
Top Load Filter    1 1/2" Thrd MPT Adptr  (Pipe Thrd)
NOTE:  Handle Style Will Vary

Square Feet
Outer Diameter
Length
25
4 15/16"
13 5/16"
Shopping Options
Top
Bottom
2 1/8" Inner Dia
2 1/8" Inner Dia
Same as:
Unicel - C-4326
 Filbur - FC2325
Spa Filter
Spa Filter
Item# PRB25-IN
In-Line Filter

Square Feet
Outer Diameter
Length
28
4 15/16"
14 7/8"
Shopping Options
Top
Bottom
2 1/8" Inner Dia
2 1/8" Inner Dia
Same as:
Unicel - C-4301
 Filbur - FC1610
Spa Filter
Spa Filter
Item# PMT27.5
Top Load Filter

Square Feet
Outer Diameter
Length
35
4 15/16"
9 1/4"
Shopping Options
Top
Bottom
2 1/8" Inner Dia
2 1/8" Inner Dia
Same as:
Unicel - C-4335
 Filbur - FC2385
Spa Filter
Spa Filter
Item# PRB35-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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