Brookaire Company's inserts are an economical way to obtain the high efficiency and lower pressure drop benefits associated with pleated panel filters with less cost. Our inserts are pleated, wire reinforced media that fit into permanent metal holding frames. They require less space for storage and transport. "Quality Inserts" are offered in ASHRAE 52.1 and 52.2 (MERV) rated medias as well as our "Odor Ban" fume control media