Insulation- 4 in./10 cm. Foamed inplace urethane (ul listed, class 1)rack system (2) smooth and quiet rack slide rails using special delrin rollersremovable tray (2) 18 gauge type 304 stainless steel w/no 4 finishhardware heavy-duty chrome plated hardware for long lasting uselighting (1) vapor proof light w/switchrefrigeration drop-in self-containedrefrigeration system with digitalthermometer and easy to adjusttemperature controller operating temperature 38?f/3.3?celectrical ~115v/60hz/1ph/ 208-230v/50-60hz/1ph available voltage (~208-230v) may affect dimensions & features.