Get a 5-pack of 5-inch MERV 13 filters, model GBELLCVR0405BK. These are perfect replacement filters for the GBELLCVR0405BK wind instrument bell cover. Key feature: they come in a pack of five. Technical specs include an exterior length and width of 5.63, and an exterior height of 0.02.
Using these filters is easy. Simply replace the old filters in your GBELLCVR0405BK wind instrument bell cover with these new ones. Make sure they fit snugly. As for maintenance, check the filters regularly for dirt and debris. If they look dirty, it's time to replace them. Keep them in a dry place when not in use to avoid damage. Also, don't force the filters into the cover; ensure a proper fit to get the best performance.
