Mini-Pleated HEPA filter Product Information: Product Features: It is used patent technology to ensure the fully use of v-type passage ; The frame is extruded and anodized aluminum . Using the special seamless sealing technology, the effect is lasting for a long time, the airflow is even; Advantages: Anti-aging technology, non-deforming, a low resistance and long life-span. Application: Often used for clean room. OEM: Customized design is available.