Box HEPA Air Filter 1. F5, F6, F7, F8, F9 is available. 2. Size can be customized to order. Box HEPA Air Filter Application: It is widely used in air purification systems of electronics, bio-pharmaceuticals, mechanical instrument & petrochemical industry etc.Characteristics:1.Adopting composite non-woven, fiberglass filter and the partition design2.corrugated partitions keep the pleat spacing ...