Cartridgesonly.com offers a wide array of spa filters. We have spa filters for a vast number of spas and spa manufacturers. Below is a listing of Spa manufacturers. If you know the maker of your spa simply click on the link of the corresponding manufacturer and that will take you to the spa filters available from cartridgesonly.com. It is highly recommended that you confirm the measurements of your spa filter prior to ordering. for instructions please see: "Measuring a Pool Cartridge or Spa Filter"
If you know the model number of your spa filter, you may use the reference charts labeled "Hayward", "Pleatco", "Unicel", "Filbur" find your model number and then click on that number, this will take you to the product page for that particular spa filter. All spa filters sold by cartridgesonly.com are made to meet OEM specifications, with the highest quality materials and are MADE IN THE USA.
If measuring your filter....
DO INCLUDE any handles for length and EXCLUDE bottom adaters or threads.