3M Type 1 Filter

3M offers two filter types to meet all cleaning needs. Different fibers and weaves are designed to trap variousparticle types. Choosing the right filter type can also optimize vacuum suction and prevent blow-by (passing ofparticles back into the air and onto work surfaces). 3M configures filters with thin fibers in two different weaves totrap specific sizes of particles, and designs filter cartridges for easy installation and safe disposal.Type 1 Fine Particle Filter A highly concentrated weave (HEPA media) traps extremely fine particles up to .3 microns. The Type 1 filter isdesigned for cleaning color laser printers, color copiers, and other highly sensitive machines that utilize toners ofextremely fine particle size. OEM Reference: 78-6969-6211-3