The HemiPleat eXtreme nano-fiber filter offers higher filtration efficiencies, greater durability and better resistance to pulse cleaning than competitive products, the company says. The standard HemiPleat filter delivers MERV (minimum efficiency reporting value) 15 efficiency — higher than the MERV 10 and MERV 13 ratings of alternative nano-fiber products. The product is also available in a high-efficiency model that delivers a tested efficiency of 99.999% on 0.5-micron and larger products by weight, the company says. Its proprietary, tri-layered technology is used to apply two layers of fine-pored nanoscale fibers that act as a pre-filter to the base media, capturing most dust at the surface before it imbeds in the filter. The durable and thick HemiPleat technology is said to increase the filter’s cleaning ability and allows the base material to have larger pore sizes than standard cellulose media. — Camfil Farr APC, Torrance, Calif.