These large capacity Lab-Line freezers are ideal for storage of biological materials and other nonflammable substances. Three models available-from 23, 49 and 72 cu. ft. CFC-free insulation and coolant. Foamed-in-place insulation. Automatic defrost. Adjustable thermostat controls internal temperature from -17°C to -23°C. Temperature control of ±0.5°C at -23°C. Polished aluminum (.040) exterior. 22-gauge stainless steel floor. Interior corners are covered for ease of cleaning. Key locks on all doors for security. PVC coated adjustable shelves. Compressor bottom-mounted for easy access.