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

Square Feet
25
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-4326
Replacement Cartridge Filters for these Pleatco Products
PRB25-IN
Replacement Cartridge Filters for these Filbur Products
FC2325
FITS Rainbow Dynamic 25 [17-2327]

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
Top example and MAY VARY
Filter Media
3 oz
Replacement Cartridge Filters for these Unicel Products
4CH-24
Replacement Cartridge Filters for these Pleatco Products
PGS-25P4
Replacement Cartridge Filters for these Filbur Products
FC0131
FITS After Hours Spas

Square Feet
25
Outer Diameter
4 5/8"
Length
6 3/4"
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
4CH-20
Replacement Cartridge Filters for these Pleatco Products
PVT25 P4
Replacement Cartridge Filters for these Filbur Products
FC0125
FITS Vita Spa


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
60
Outer Diameter
8"
Length
9 1/4"
Top
Posi Grip
Top example and MAY VARY
Bottom
2" MPT
Top example and MAY VARY
Filter Media
3 oz
Replacement Cartridge Filters for these Unicel Products
8CH-66
Replacement Cartridge Filters for these Pleatco Products
PMA60 2A
Replacement Cartridge Filters for these Filbur Products
FC0515
FITS Master Spas, Top Load Cartridge