Thermo Scientific Heraeus CO2 Incubator Model BBD6220, stainless steel chamber with 3 shelves, internal dimensions 24" X 27" X 23", total volume 220 liters, maximum load per shelf 11 lbs, ambient temp range *C 18....30, Humidity control setting range %RH 60...95, CO2 control measuring and control range Vol-% 0...20, O2 control Vol-% 3...90, disinfection temperature on all surfaces *C/h 180/3. 120 volts 1ph.