Dynamic Air Cleaners can be found at the UNI-Dome, home of the University Of Northern Iowa basketball and football programs. In a recent IAQ upgrade to reduce the ventilation air into the building, which was constructed in 1976, Cosatini Engineering (Chicago) used the Ashrae 62 IAQ procedure to calculate a reduction of outside air needed in the facility. The original plan was to use 95% cartridge filters with a bank of carbon to meet Standard 62 requirements. Dynamic V-Banks were used in place of the passive cartridge filters in two 125,000 cfm air handlers. By using Dynamic V-Banks instead of the passive filtration system, the horsepower was reduced enough to enable the contractor to reuse the existing lower capacity fans which saved money on the capital investment. Added benefits included the increased life of Dynamic media over the passive cartridge filters and carbon filters, reduced energy costs to power the air handlers, longer maintenance intervals and subsequent lower labor costs, as well as smaller, lighter replacement media that was easier to handle and store.