SpectraCool Narrow with Advanced Corrosion Protection Solutions provide industry leading corrosion protection to components critical to the performance of the air conditioner. For applications where air conditioners are exposed to harsh, corrosive, chemical elements. Hoffman utilizes advanced coatings to protect the critical components, extending their life and optimizing the extended performance level of the product. Features: Level 1 Protection Includes: Protective coatings only applied to copper tubing and coils on the condenser (exterior facing) side as well as thermostat coatings.; Level 2 Protection Include: Everything that was coated in Level 1, plus protective coatings applied to the evaporator (interior facing ) side and an additional wrap around the thermostat.; Narrow design accommodates 12-inch (300mm) deep cabinets; Attractive industrial design with minimal use of visible fasteners; Cleanable, reusable aluminum mesh filter protects coils for maximum cooling performance; R407C, R513A or R134a refrigerants; Models for 115, 230 and 400/460 3-phase VAC power input; Outdoor model operating temperature range from -40 F/-40 C to 131 F/55 C (125 F/52 C on N28 Series); Reliable mechanical thermostat on enclosure side of the unit; indoor Air Conditioner models include digital display on ambient side; Dust-resistant condenser coil allows the unit to be run filterless in most applications; Energy efficient reciprocating compressor on N28 models; Energy efficient rotary compressor on N36 and N43 models; Galvanized sheet-metal cover for rugged factory environments; Easy-mount flanges for simple installation; Every unit functionally tested before shipping; Standard models include: active condensate management with heater strip, power-off relay for door switch and other system requirements and malfunction switch; Remote Access Control Units support up to 2 temperature sensors and 10 alarms. They support multiple communication protocols: SNMP, Modbus TCP, Ethernet/IP, and Profinet.; Mounting hardware, gaskets and user manual furnished with the unit