XPert Balance enclosures feature a deep 23 inches interior to accommodate large digital and analytical balances. The patented Clean-Sweep air foil allows air to sweep the work surface for maximum containment. Airflow openings pull inflow air from under the air foil so that clean air continually flows over the air foil creating a constant barrier of protection from contaminants. Other containment-enhancing features include an upper containment sash foil to bleed air into the enclosure to direct concentrations of contaminants away from the users’ breathing zone; an upper dilution air supply to introduce room air at the top of the sash; and a zoned-perforated rear baffle that creates horizontal laminar airflow to maximize containment. Enclosures are available in 2, 3 and 4 widths.