CBP - Commercial Back Pressure APPLICATION, R134a Refrigerant, 115V 1 Phase 60Hz / 100V 1 Phase 50Hz 1/5 HP, Low Start Torque (LST) 950 BTU Capacity, 0.250" Sweat (1/4" ODF) SUCTION LINE SIZE, 0.1875" DISCHARGE LINE SIZE, Reciprocating Compressor (Model:AZA0395YXA)