Filbur FC-2390 Spa Filter

The best way to confirm compatibility is to check the part number printed on your existing filter's end cap. If you can't find a number, measure the diameter and length of your current filter—this model is 4.9375 inches in diameter and 13.3125 inches long—and verify that your spa brand is listed among the compatible manufacturers.

The antimicrobial end caps are designed to inhibit the growth of bacteria, mold, and mildew on the filter itself. This helps keep your spa water fresher for longer and prevents the filter from developing unpleasant odors between cleanings.

For optimal water quality, rinse the cartridges with a garden hose every two to four weeks to remove debris. We recommend replacing the filters entirely once a year, or sooner if you notice the water flow slowing down or the polyester media becoming discolored and unable to be cleaned.

Yes, the wider support bands are designed to maintain the structural integrity of the pleats, which prevents them from collapsing under pressure. This ensures that water can flow evenly across the entire surface area of the filter, maximizing its efficiency.

These filters are specifically engineered for hot tubs and spas. While they use high-quality polyester media, their size and flow characteristics are optimized for the smaller volume and higher temperatures typical of spa systems rather than full-sized swimming pools.