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Outback Spa Filters
These Filters Meet or Exceed Specifications Set Forth By This Spa Manufacturer.
 
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
2 Required = 35sf

Square Feet
Outer Diameter
Length
25
4 5/8"
9 3/4"
Shopping Options
Top
Bottom
Posi Grip Handle
1 1/2" MPT
Same as:
Unicel - C-4310
Filbur- FC3077
Spa Filter
Spa Filter
Item# PGS25 P4
Top Load Filter    1 1/2" Lock-In MPT Adptr (Pipe Trds)
NOTE: Handle Style Will Vary

Square Feet
Outer Diameter
Length
25
4 5/8"
11 7/8"
Shopping Options
Top
Bottom
Posi Grip Handle
 1 1/2" MPT
Same as:
Unicel - 4CH-30
Filbur - FC0141
Spa Filter
Spa Filter
Item# PTL25H 4A
Top Load Filter    1 1/2" Thrd MPT Adptr (Pipe Thrds)
NOTE: Handle Style Will Vary

Square Feet
Outer Diameter
Length
35
4 15/16"
10 3/8"
Shopping Options
Top
Bottom
2 1/8" Inner Dia
2 1/8" Inner Dia
Same as:
Unicel - C-4429
Filbur - FC3082
Spa Filter
Spa Filter
Item# DSF2550
In-Line 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
47
6"
9 1/8"
Shopping Options
Top
Bottom
Posi Grip Handle
1 1/2" MPT
Same as:
Unicel - 6CH-47
Filbur - FC0315
Spa Filter
Spa Filter
Item# PTL47W A
Top Load Filter    1 1/2" Thrd MPT Adptr (Pipe Thrds)
NOTE: Handle Style Will Vary

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

 

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