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Diamond Back Filters
These Filters Meet or Exceed Specifications Set Forth By This Spa Manufacturer.
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Square Feet
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Outer Diameter
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Length
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17.5
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4 15/16"
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4 5/8"
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Shopping Options
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Top
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Bottom
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2 1/8" Inner Dia
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Same as:
Unicel - C-4401
Filbur - FC2386
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Item# PRB17.5SF PR
2 Required = 35sf
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Square Feet
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Outer Diameter
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Length
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25
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4 15/16"
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6 5/8"
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Shopping Options
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Top
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Bottom
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2 1/8" Inner Dia
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Same as:
Unicel - C-4405
Filbur - FC2387
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Item# PRB25SF PR
Skim Filter 2 Required = 50sf
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Square Feet
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Outer Diameter
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Length
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50
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4 15/16"
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13 5/16"
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Shopping Options
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Top
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Bottom
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2 1/8" Inner Dia
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Same as:
Unicel - C-4950
Filbur - FC2390
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Item# PRB50-IN
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Square Feet
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Outer Diameter
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Length
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35
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6"
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9 7/8"
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Shopping Options
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Top
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Bottom
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Posi Grip
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1 1/2" MPT
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Same as:
Unicel - 6CH-35
Filbur - FC0320
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Item# PTL35W 4A
Top Load Filter 1 1/2" Thrd MPT Adptr (Pipe Thrds)
Note: Handle Styles Will Vary
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Square Feet
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Outer Diameter
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Length
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50
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6"
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13 7/16"
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Shopping Options
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Top
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Bottom
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Posi Grip
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1 1/2" MPT
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Same as:
Unicel - 6CH-50
Filbur - FC0320
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Item# PTL50W-SV 4A
Top Load Filter 1 1/2" Thrd MPT Adptr (Pipe Thrds)
Note: Handle Style Will Vary
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