The KELVINATOR T30HSP-4 0721523 is a specific model number for a low-temperature hardening cabinet designed for commercial use, not a standard household refrigerator. Its product description highlights features like a patented Kelvinator refrigeration design, digital temperature control, 20-gauge steel construction, and a capacity for reaching temperatures as low as \(-30^{\circ }\)F. Key features include heated perimeters and mullions, an auto door switch, and a heated drain pan. Key features Construction: 20-gauge steel interior and exterior with a white powder-coat finish.Temperature Control: Digital temperature controller with an LED display and programmable defrost options.Refrigeration: Uses a patented Kelvinator refrigeration design and patented expansion valve system.Doors: Solid, insulated doors with heated perimeters and mullions to prevent frost buildup.Performance: Features a fin coil and forced air evaporator coil for improved performance, and an extended evaporator coil to help eliminate interior wall icing.Convenience: Includes an auto door switch that turns off fans when the door is opened, and a heated drain pan for condensation. Model specifics Model: T30HSP-4.Type: Low-temperature hardening cabinet.Temperature Range: \(0^{\circ }\)F to \(-30^{\circ }\)F.