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Outback Hot Tub Filters
Outback Spa Filters
These Filters Meet or Exceed Specifications Set Forth By The Spa Manufacturer.

Square Feet
17.5
Outer Diameter
4 15/16"
Length
4 5/8"
Top
2 1/8" Inner DiameterTop example and MAY VARY
Bottom
2 1/8" Inner DiameterTop example and MAY VARY
Filter Media
3 oz
Replacement Cartridge Filters for these Unicel Products
C-4401
Replacement Cartridge Filters for these Pleatco Products
PRB17.5SF
Replacement Cartridge Filters for these Filbur Products
FC2386
FITS Rainbow DSF 35 [17-2606]

Square Feet
25
Outer Diameter
4 5/8"
Length
9 3/4"
Top
Posi Grip
Top example and MAY VARY
Bottom
1 1/2" MPT
Spa Filter
Filter Media
3 oz
Replacement Cartridge Filters for these Unicel Products
4CH 24
Replacement Cartridge Filters for these Pleatco Products
PGS25 P4
Replacement Cartridge Filters for these Filbur Products
FC0131
FITS After Hours Spas

Square Feet
35
Outer Diameter
4 15/16"
Length
9 1/4"
Top
2 1/8" Inner DiameterTop example and MAY VARY
Bottom
2 1/8" Inner DiameterTop example and MAY VARY
Filter Media
3 oz
Replacement Cartridge Filters for these Unicel Products
C-4335
Replacement Cartridge Filters for these Pleatco Products
PRB35-IN
Replacement Cartridge Filters for these Filbur Products
FC2385
FITS Rainbow Dynamic 35 [03FIL1300]

Square Feet
47
Outer Diameter
6"
Length
9 1/8"
Top
Posi Grip
Top example and MAY VARY
Bottom
1 1/2" MPT
Top example and MAY VARY
Filter Media
3 oz
Replacement Cartridge Filters for these Unicel Products
6CH-47
Replacement Cartridge Filters for these Pleatco Products
PTL47W A
Replacement Cartridge Filters for these Filbur Products
FC0315
FITS Advanced/LA Spas, Aber Hot tub

Square Feet
50
Outer Diameter
4 15/16"
Length
13 5/16"
Top
2 1/8" Inner DiameterTop example and MAY VARY
Bottom
2 1/8" Inner DiameterTop example and MAY VARY
Filter Media
3 oz
Replacement Cartridge Filters for these Unicel Products
C-4950
Replacement Cartridge Filters for these Pleatco Products
PRB50-IN
Replacement Cartridge Filters for these Filbur Products
FC2390
FITS Rainbow Dynamic 50 [03FIL1600]