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These Filters Meet or Exceed Specifications Set Forth By This Spa Manufacturer.
 
Square Feet
Outer Diameter
Length
20
3 1/4"
13 1/4"
Shopping Options
Top
Bottom
Posi Grip
1 3/8" Inner Dia
Same as:
Unicel - na
Filbur - na
Item# PVT20
Note: Handle Style Will Vary

Square Feet
Outer Diameter
Length
25
5"
7 3/4"
Shopping Options
Top
Bottom
Posi Grip
1.9" Inner Dia (1 7/8")
Same as:
Unicel - na
Filbur - na
Spa Filter
Spa Filter
Item# PHC25
Skim Filter
Note: Handle Style Will Vary

Square Feet
Outer Diameter
Length
25
4 5/8"
9 3/4"
Shopping Options
Top
Bottom
Posi Grip
1 1/2" MPT
Same as:
Unicel - 4CH-20
 Filbur - FC0125
Spa Filter
Spa Filter
Item# PSG25 P4
Top Load Filter    1 1/2" Thrd MPT Adptr (Pipe Thrds)
Note: Handle Style Will Vary

Square Feet
Outer Diameter
Length
19
4 5/8"
8"
Shopping Options
Top
Bottom
Posi Grip
1 1/2" MPT
Same as:
Unicel - 4CH-21
Filbur - FC0121
Spa Filter
Spa Filter
Item# PTL18 4A
Top Load Filter    1/12" Thrd MPT Adptr (Pipe Thrds)
Note: Handle Style Will Vary

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
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
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
Upgrade from 25sf (PRB25-IN)

Square Feet
Outer Diameter
Length
50
6"
8 1/4"
Shopping Options
Top
Bottom
Posi Grip
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 Thrd SAE Adptr (Wide Thrds)
Note: Handle Style Will Vary

Square Feet
Outer Diameter
Length
40
7"
9 3/4"
Shopping Options
Top
Bottom
Posi Grip
1 1/2" MPT
Same as:
Unicel - 7CH-40
Filbur - FC0435
Spa Filter
Spa Filter
Item# PVT40
Top Load Filter    1 1/2" Thrd MPT Apdtr (Pipe Thrds)
Note: Handle Style Will Vary

Square Feet
Outer Diameter
Length
50
7"
14 3/4"
Shopping Options
Top
Bottom
Posi Grip
 1 1/2" MPT
Same as:
Unicel - 7CH-50
Filbur - FC0463
Spa Filter 
Spa Filter
Item# PCS50 A
Top Load Filter    1 1/2" Thrd MPT Adptr (Pipe Thrds)
Note: Handle Style Will Vary

Square Feet
Outer Diameter
Length
50
7"
14 3/4"
Shopping Options
Top
Bottom
Posi Grip
1.9" Inner Dia (1 7/8")
Same as:
Unicel - C-7449
Filbur - FC0491
Spa Filter
Spa Filter
Item# PVT50
Top Load/Skim Filter    1 1/2" Thrd MPT Adptr (Pipe Thrds)

Square Feet
Outer Diameter
Length
50
7"
18 5/8"
Shopping Options
Top
Bottom
3" Inner Dia
3" Inner Dia
Same as:
Unicel - C-7450
Filbur - FC0625
Spa Filter
Spa Filter
Item# PCM50

Square Feet
Outer Diameter
Length
50
8 1/2"
71/4"
Shopping Options
Top
Bottom
1.9" Inner Dia (1 7/8")
2 5/8" Inner Dia. Slots
Same as:
Unicel - C-8350
Filbur - FC3053
Spa Filter
Spa Filter
Item# PVT50 W
Filtration Filter

 

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