Absolute® XH Camfil Farr high-capacity absolute filters are manufactured from the highest quality components, under demanding quality control conditions, and are certified to ensure performance in the most critical of applications. The XH is available in efficiencies from 99.97% to 99.999% on 0.3 micron particles. The XH is your choice for HEPA level air filtration in applications wherein ultra-clean air, increased airflow capacity and energy-savings are critical. Each Camfil Farr XH Absolute includes: A 16-gauge steel frame with a zinc aluminum alloy finish to create a durable, dimensionally stable corrosion-resistant enclosure. X-body frame that is assembled without the use of penetrating fasteners to ensure leak-free performance throughout the life of the filter. Our unique urethane potting process completely encapsulates the filter pack within the enclosing frame. Safe-edge tapered corrugated aluminum separators (allowing up to 88% more media area than standard HEPA filters) to ensure uniform airflow through-out the media pack and maintain pack stability. The edges of the separators are hemmed for added strength and to protect the media from damage during manufacture, shipping and installation. Micro glass fiber media to provide efficiency to specified performance values. The media is highly resistant to moisture in high humidity environments. A one-piece seamless urethane gasket to ensure a leak-free filter-to-holding mechanism seal. (A neoprene dove-tailed juncture gasket is also available)