From the first dropdown menu, select whether you need a filter for a pool, a spa or hot tub, or both. Once you select the correct category in the dropdown menu, you will need to select the correct manufacturer. You will find the manufacturer's name directly on the filtration system. After retrieving the name, simply select it from the dropdown list. For example if you select ‘Spas’ then ‘Artesian Spas’ for the manufacturer, you are ready to move to the next step. Just select ‘GO’ to search for the filter.