The HemiPleat nano dust-collector filter filter features a thick layer of durable nanofibers on its surface; the reported results include high filtration efficiencies, long service life, and lower pressure drop than competitive filters (leading to energy savings and increased performance). The media is said to be durable enough to handle challenging dust applications, such as laser and plasma cutting, welding and thermal spray. The line includes MERV 14 and MERV 16 efficiency options, and a choice of standard or fire-retardant cellulose-blend base media. (800) 479-6801, FarrAPC.com.