High Efficiency Particulate Air Filter retains and filters out all particles from the air that passes through it down to 0.3 microns in size at an efficiency rating of 99.97%. The Filter is suitable for absolute filtration in nuclear installations, toxin research laboratories, pharmaceutical industry and clean room system. The Filter is made from quality grade material to ensure optimum performance for longer period of time. High Efficiency Particulate Air Filter comes in different specifications to suit industrial requirement.