Replacement filters for 21" bell covers.
This 5-pack of 21" MERV 13 Filters are replacement filters for instrument bell covers. Designed to fit 21" bells for added protection, these filters help keep your instrument clean and safe. Filters should be replaced every 1-2 months.
- Pack of five GBELLCVR2021FILTER MERV 13 replacement filters for wind instrument bell covers
- For best practices, replace after 1-2 months
- Do not wash filter