A ProAqua PA-6940 replacement filter cartridge, shown vertically against a plain white background. The filter has a white pleated body with blue plastic end caps and a large white and blue paper label in the center.

50 Sq. Ft. PA-6940 Hot Tub Filter | ProAqua

$55.99
$55.99
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A ProAqua PA-6940 replacement filter cartridge, shown vertically against a plain white background. The filter has a white pleated body with blue plastic end caps and a large white and blue paper label in the center.
  • A ProAqua PA-6940 replacement filter cartridge, shown vertically against a plain white background. The filter has a white pleated body with blue plastic end caps and a large white and blue paper label in the center.
50 Sq. Ft. PA-6940 Hot Tub Filter | ProAqua

50 Sq. Ft. PA-6940 Hot Tub Filter | ProAqua

$55.99
$55.99

The ProAqua PA-6940 is a 50-square-foot replacement hot tub filter compatible with Pleatco PWW50P3, Unicel 6CH-940 and Filbur FC-0359 spa filter cartridges. It has a top handle and a 1-1/2-inch SAE coarse-thread bottom connection.

Compare the dimensions and connection details below with your existing cartridge before ordering. This filter does not fit Canadian Spas models that use Glacier filters, even if another specification appears similar.

Filter specifications

  • ProAqua model: PA-6940.
  • Filter media area: 50 square feet.
  • Diameter: 6 inches.
  • Length: 8-1/4 inches.
  • Top: handle.
  • Bottom: 1-1/2-inch SAE coarse-thread connection.

Compatible replacement references

  • Pleatco PWW50P3.
  • Unicel 6CH-940.
  • Filbur FC-0359.

Filter rotation

Keep a spare cartridge available so you can rotate a soiled filter out for a clean, dry replacement when changing your hot tub water.

Confirm the cartridge diameter, length and bottom thread against your current filter before purchasing. Do not select this cartridge for Canadian Spas applications requiring Glacier filters.

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