Unicel 7CH-50 filter cartridge, 50 sq ft, 7 inch diameter by 14-3/4 inches longUnicel Cartridge, 50 sq ft, 7CH-50 In stock$5499
Unicel 7CH-50 filter cartridge, 50 sq ft, 7 inch diameter by 14-3/4 inches long
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Unicel Cartridge, 50 sq ft, 7CH-50

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$5499
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Quick overview

  • 50 square feet of media The rated filter area of the cartridge.
  • 7 inch outside diameter Measure the outside diameter of the old cartridge to confirm the match.
  • 14-3/4 inch length The overall length, which has to match the housing as closely as the diameter does.
  • Listed for several spa makers Unicel lists it under Coleman Spas, DM Industries, Sunrise Spas of Canada and Wild Water Spa.
  • Unicel part 7CH-50 Order by the Unicel number when the original spa part number is no longer readable.
  • Rinse between changes Cartridges last longer when they are rinsed regularly, but a pleat pack that stays gray after cleaning is finished.
Full description and specifications ↓

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Product details

The Unicel 7CH-50 is a 50 square foot replacement filter cartridge, 7 inches in outside diameter and 14-3/4 inches long. Unicel lists it under Coleman Spas, DM Industries, Sunrise Spas of Canada and Wild Water Spa.

Matching the cartridge

Cartridges are matched on three things: outside diameter, overall length and the end caps. Get the first two from the numbers above and compare the ends against what you pull out. Ordering by the Unicel part number is the surest route when the original marking on the old cartridge has worn away, which happens quickly in a spa.

Cleaning and replacement

Regular rinsing gets a cartridge through a season, and a soak lifts oils and scale that a hose cannot. There is a limit: once the pleats stay discolored after cleaning, or they splay, mat together or tear, the media is spent and flow will not come back. At that point the pump is working against the filter, and a new cartridge is the cheaper answer.

Specifications
Brand Unicel
Manufacturer part number 7CH-50
UPC 678285270052
Type Filter cartridge
Square footage 50
Outside diameter 7"
Length 14-3/4"
Filter manufacturer Coleman Spas, DM Industries, Sunrise Spas (Canada), Wild Water Spa
Shipping weight 3.4 lb
Ships Parcel

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Customer reviews

Questions and answers

What people ask about this product, answered by our pool techs.

What size is this cartridge?
50 square feet, 7 inches in outside diameter and 14-3/4 inches long.
Which spas does it fit?
Unicel lists it for Coleman Spas, DM Industries, Sunrise Spas of Canada and Wild Water Spa. Compare the diameter, length and end fittings against your old cartridge before ordering.
How do I know it is time to replace rather than clean?
When a cartridge stays gray after a proper soak and rinse, or the pleats are splayed, matted or torn, cleaning no longer restores flow.
Can I run the spa without the cartridge?
No. The cartridge is what keeps debris out of the pump and heater, and running without it sends that debris straight through the equipment.
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