TRH048AFD20CPBS TR=TRANQUILITY HIGH EFFICIENCY 410A H=HORIZONTAL 048=4 TON A=CURRENT REVISION F=460V/3PH/60H D=DXM2 2=EXTENDED RANGE,ULTRA QUIET,1" FILTER RAIL 0=NO WATER CIRCUIT P=LEFT RETURN B=BACK SUPPLY S=STANDARD CLIMATEMASTER