Plant Growth chambers are designed to facilitate many botanical and agricultural research applications, including seed germination studies, plant pathology, plant tissue culture studies and plant genetic research. Double walled Construction with regular and GMP models. 80mm thick 'PUF' insulation lagged in-between the walls to prevent loss of temperature. The chamber has two doors, inner full view glass door and outer metallic door with positive locking. A well balanced CFC-free refrigeration system with eco-friendly refrigerant.