Greenheck has expanded its packaged rooftop ventilation line with the addition of model RV(E)-120, a pre-engineered system with increased performance capabilities for larger dedicated outdoor air systems, multi-zone VAV systems, and single-zone VAV systems. Model RV(E)-120 has a two-inch R13 foam panel construction and thermally broken design. Low sound condenser fans have an average sound level 5-10dB less than standard condensing fans, while dual supply and exhaust fans deliver improved performance as well as reduced electrical loads. Four independent cooling circuits improve the cooling turndown and control. On indirect gas-fired furnaces, 10:1 modulating turndown is available for better operating performance. Model RV(E)-120 has performance capacities up to 12,000 cfm, up to 45 tons of cooling and up to 800 Mbh heating.