ST1144AKCH0E0MS TRANQUILITY ST ROOFTOP R-454B 12.5 TON 208/230-3-60 W/REFRIGERANT DETECTION SYSTEM MOTORIZED FRESH AIR DAMPER CXM2 CNTRLS FIELD CONNECTED EXT RNG INS 2" MERV 8 FILTERS NO INTERNAL PUMPS E-COATED AIR COIL NO SMOKE DETECTOR ECM MOTOR