Meltblown Cartridge Filters By RS Salt Supply In September 8, 2016 no comments Economical, melt blown filter elements 2.5″ OD 1″ ID Effective removal ratings at 90% efficiency Available in micron ratings from 1 to 150µ Lengths available in 10″, 20″, 30″ and 40″ Categories:Cartridge Filters, Filters Share: