... fiber material, net outside, v-type boxFiltration Grade:Hepa FilterMedium Material:fiber class and chemical fiber or corrugated ... 's requirement.There are so many kinds of HEPA Filter specifications and dimensions, we wouls like to list ... /2000,85/3000,145/4000There are so many filter size and technical data, we could manufacture filters ... V-type F7-H10 high efficiency pleated hepa filter for purification