The PEFY model is a high-performance, ceiling-concealed, ducted indoor unit that provides up to .60" external static pressure. An excellent choice for office buildings, schools, hotels, assisted-living facilities, residences and other applications where ceiling space is available. External static pressure settings are adjustable to meet different application conditions Capacities range from 6,000 to 54,000 Btu/h Extremely quiet, with sound ratings as low as 26 dB(A) Auto-fan feature to adjust fan speed based on temperature differentials between space and set point Side access to control panel Integrated condensate lift mechanism to provide up to 21 11/16" of lift