New best (4) BlueAir Pre-Filter Fabric BLUE 411

Product Name: New best (4) BlueAir Pre-Filter Fabric BLUE 411
Set of four brand new Blue Air air filter "pre-filter" fabric covers. These are bright blue called "Diva". They fit 411 (cylinder shaped). Four sets-- two are in package, and two are without their packaging. I see one cover has some very best faint smudges that look superficial (washable), probably dust from storage. We did not use these -- they came right off upon unboxing our filters and were replaced with a different color. I also have four brand new dark grey covers in my shop at the time of listing this. Smoke, pet, and fragrance free shop. Bundle to save on shipping! BIN72220N3 #blueair #filter #prefilter.