The Electronic Filter Bank electronic air cleaner for commercial uses is mounted to the return-air plenum of a forced-air HVAC system. With an installation weight of 37 pounds, it captures airborne particles 0.1 to 0.3 microns and larger from the air circulated through it. A relay contact can be connected to a building-management system to provide remote status indication. Capacity is 2,000 cubic feet per minute, per unit. Multiple units can interconnect to form an array. Indicator lights signal proper operation and fault conditions. A test button checks system operation.

Trion Inc., 101 McNeill Road, Sanford, NC 27330; (919) 775-2201; fax (919) 777-6399.