RHSL Series Featuring Earth-friendly R-410A refrigerant. Features GE's new X-13 motor, which provides enhanced SEER performance with most Rheem outdoor units. Versatile 4-way convertible design for upflow, downflow, horizontal left and horizontal right applications. Nominal airflow up to 1.0' external static pressure. Factory-installed high efficiency indoor coil. Sturdy cabinet construction with 1.0 inch [25.4 mm] of foil faced insulation for excellent sound and insulating characteristics. Field-installed auxiliary electric heater kits (not included) provide exact heat for indoor comfort. Kits include circuit breakers which meet U.L. and cUL requirements for service disconnect.