CARTRIDGE FILTER TECHNOLOGY
HIGH PERFORMANCE FILTERS
The DFE filter design is another indication of Donaldson Torit’s commitment to technical research
and development. The distinguishing factor in our filters is Ultra-Web filtration technology. Ultra-Web fine
fiber media uses a layer of fibers 0.2 to 0.3 microns in diameter to capture contaminants on the surface of
the media less than one micron in size. The resulting dust cake is easily cleaned off during the automated
collector cleaning cycles providing cleaner air longer, with a minimum MERV* 15 efficiency rating based onASHRAE 52.2 - 2007 test standards.