Johns Manville has long been recognized as the leading supplier of air filtration media for pocket filters and pleated box filters. JM offers the most complete line of products designed to meet ASHRAE 52.1 and 52.2 performance requirements including MICRO-AIRE™ high-loft microglass media.

MICRO-AIRE™ is the most widely-used HVAC media in the world. This high-loft microglass media has repeatedly been shown to provide consistent performance in real-life applications. No other media has been more thoroughly tested for both performance and safety. It can also be used in difficult high-temperature, Class-1 fire-rated, or oil-mist applications where synthetic media often fail. MICRO-AIRE is ideal for extended-surface pocket filters or deep-pleated rigid box filters.