Unicel 6CH-940 45 Square Foot Media Replacement Hot Tub Spa Filter Cartridge with 225 Pleats
$42.49
Price: $40.99 - $42.49
(as of Sep 19, 2025 22:25:00 UTC – Details)
From the brand
Filter Cartridges
DE Filter Grids
Replacement Spa Filter: 6CH-940 filter cartridge features 45 square feet (225 pleats) of 3-ounce basis weight media that catches debris and particles down to an average of 20 microns in size, keeping your hot tub water clear
Optimal Debris Capture: Hot tub filter has sharp, uniform pleat folds that maximize water flow, minimize pressure loss, and allow full use of the pleat surface to hold more debris
Filter Media: Constructed with 100-percent polyester Reemay material that balances dirt-holding capacity, cleanability and durability with excellent chemical resistance properties
Thread and Handle Type: Top load design includes a 1.5-inch SAE thread and a semi-circular handle for easy cartridge removal and replacement; Durable end caps resist damage from chemicals
Spa Fitment: Compatible with Catalina Spas, Charisma Spas, Leisure Bay Spas, Waterway Plastics, Custom Molded Products, Bullfrog Spas, Dynasty Spas, Sunrise Spas, Master Spas and more; OD: 6 inches, Length: 8-1/4 inches
Customers say
Customers find the water filter fits perfectly and works well, with one mentioning it doesn’t affect water flow. They appreciate its quality and consider it a great replacement product, while also noting its good value for money. The durability receives mixed feedback, with one customer reporting it lasted over 28 months without problems.
12 reviews for Unicel 6CH-940 45 Square Foot Media Replacement Hot Tub Spa Filter Cartridge with 225 Pleats
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$42.49
Nowhere Man –
Great Replacement Product
Fits perfectly in our hot tub, works perfectly and is much, much cheaper than from the local spa dealer. Amazon should make this available as a subscribe and save item.
Joel Hall –
Nice Filter for Great Price
This filter fit my Catalina Monterey hot tub perfectly. The price is so much cheaper, but it seems to work well and does not effect water flow.
Brent White –
Winning at a great price
Perfect fit and easy install. As good as oem. Fast shipping as well. Just use the dimensions provided and take a minute to measure yours. If the match, these are a win.
Mr.Mojo in CO. –
Unicel is the number one filter company, but there are lower cost alternatives.
As far as I know this is the top name in spa and pool filters. I have used them for many years and have always had good results. THey do not ever fall apart in any way and are 1 piece construction made just for my spa model. I have used other cheaper ones and some will have two pieces and they are no good. on the other hand I have used a lower priced option purchased here on Amazon and I really can’t tell the difference between them other than the name. I have been the owner of my spa for 15 long happy years and only need to change the filters once a year unless I have a big party and people spill drinks in the water. Unicel is the OEM filter supplier for my hot tub.
BearMog –
Awesome Filters! They do the job perfectly!
I replaced the old filters with these new ones (same brand as previous) and the water is unbelievable clear now. Balancing the water chemistry has become much more consistent. When I took out the old filters they were in pretty bad shape. Looks like the white filter fabric had significantly disintegrated. Obviously these need to be replaced more often than what I had been doing. I will repurchase these again.
dave –
price great.
Quick,price great.
radiohead –
Perfect
Perfect fit, work great
PhotogDog –
Great factory replacement filter for my spa.
This filter was an exact OEM with my installed Spa. The original lasted over 28 months without problems, The cost was 1/2 the price offered out in town or at my Spa Dealership, I was amazed! Amazon shipped the same day and I had the filters 2 days later, properly packaged and undamaged. I am very pleased with this purchase…
Super1 –
Well constructed, filters good, easy to clean
Anita –
It was exactly fitting for the hot tub!
kenneth gauthier –
Like
Michele twa –
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