... bus 4.Spare parts easy be get,easy be installed and op Roof top mounted bus AC units for 10- ... 109120Btu) ,roof top mounted system. Real benifits to the OEM and end userPretty figure, compct,ultra-slime design,low weight,perfectly compatible ... body.Pleasant temperature,low noise ,consistently,abundant cooling capacity ,heating and tropic options.Easy going, easy be installed , operation,maintenanceDosn' ...