Enhance your GBELLCVR2729BK wind instrument bell cover with this 5-pack of 29-inch MERV 13 filters. These high-quality filters effectively trap dust and particles. For best results, replace them every 1 - 2 months. Remember, don't wash the filters. The exterior length and width are both 28.5, with a height of 0.02 and a net weight of 0.08.

Using these filters is easy. Just install them in your GBELLCVR2729BK wind instrument bell cover. To keep your instrument in top - shape, replace the filters every 1 - 2 months. This will ensure that the air flowing through your instrument is clean. Don't try to wash the filters as it may damage them. If you notice a significant decrease in air flow or an increase in dust around your instrument, it might be time to replace the filters earlier.