T-Series Mid-Size Air Conditioners keep equipment cool at a range of heat loads. Their discreet design helps them to blend into blend into rugged factory or outdoor environments. Each unit is equipped with corrosion-resistant components, compressor heaters and head pressure controls for optimal outdoor performance. Features: Stock models equipped with head pressure control for low-ambient operation, compressor heater, coated condenser coil, malfunction switch, thermostat and heater package; R134A or R-407C earth-friendly refrigerant; Models for 115, 230 and 460 VAC power input; UL Listed to save customers time and money with agency approvals (some models UL recognized); Outdoor model operating temperature range from -40 F/-40 C to 131 F/55 C; Exterior and fully recessed mounting options on many models; Compact footprint to minimize real estate and maximize capacity; Reliable mechanical thermostat on enclosure side of the unit; Dual condenser-side air movers for performance redundancy; Painted galvanized sheet-metal cover for rugged factory and outdoor environments; Easy-mount flanges for simple installation; Cleanable, reusable aluminum mesh filter protects coils for maximum cooling performance; Mounting hardware, gaskets and user manual furnished with the unit; Every unit functionally tested before shipping; Standard Outdoor Air Conditioner models also include:; Telcordia GR-487 capable; Thermostat; Corrosion-resistant components; Malfunction switch; Compressor heater; Head pressure control; Enclosure heater - Notes: ProAir Harsh Environment air conditioner may be more appropriate. Refer to ProAir Harsh Environment air conditioner catalog section. Consult the Factory for availability and catalog number.; Reference the Spec Sheet in the Downloads tab for complete product specifications, performance curves and detailed drawings.