air intake cotton filter for auto spray booth 1.Washable and reusable 2.Large dust holding capacity 3.Quality:high FRS-30 blue-white air intake cotton filter for spray booth ,coarse filter media,spray booth pre filter cottonApplication: ≥5μm, Filter dust , (especially used in the train or the subway, where the place has air-conditioner), It can prefilter dust when the air through filtration ...