... 2.Commonly used in deep pleat and mini-pleat HEPA Filter HEPA Filter Media(Filter Material)Media Performance: white flat appearance and clear creaseThe ... thickness of the folded HEPA Filter Media can be 20,25,35,50,65 and 80 ... used in Deep pleat and Mini-pleat HEPA FiltersThere are PP and fibreglass HEPA Filter MediaSizes of dust particle collected can be ...