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DFA Hot Tub Filters
DFA 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"
Top example and MAY VARY
Bottom
2 1/8"
Top 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 15/16"
Length
6 5/8"
Top
2 1/8"
Top example and MAY VARY
Bottom
2 1/8"
Top example and MAY VARY
Filter Media
3 oz
Replacement Cartridge Filters for these Unicel Products
C-4405
Replacement Cartridge Filters for these Pleatco Products
PRB25SF-PR
Replacement Cartridge Filters for these Filbur Products
FC2387
FITS Rainbow DSF 50 [3005825]

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]