W48HF-C15XP4XXX 4 TON WALL MOUNT HEAT PUMP CONFIGURED AS FOLLOWS: F - R-454B RIGHT SIDE CONTROLS C - 460-480/3/60 VOLTAGE 15 - 15KW ELECTRIC HEAT X - BAROMETRIC FRESH AIR DAMPER P - 2" PLEATED MERV-8 FILTER 4 - GRAY BAKED ENAMEL FINISH X - STANDARD CABINET X - COPPER/ALUM COILS X - HIGH & LOW PRESSURE SWITCHES COMPRESSOR CONTROL MODULE, REFRIGERANT LEAK DETECTOR (RDS) MFG BY: BARD