This document provides information on air filter testing equipment from FEC. It describes testing systems that can test various types of air filters according to standards like EN 779 and ASHRAE 52.2. The systems can test parameters like flow rate, differential pressure, dust holding capacity, and efficiency. They include components like test ducts, centrifugal blowers, aerosol generators, and particle counters. FEC offers customizable filter testing solutions at various throughput capacities.