Thick doors are designed to ensure top performance and temperature retention. Nylex Latches eliminate sharp edges; won't rust, bend, or dent. Insulated to maintain correct serving temperatures. Individual track for each food pan. PC300N holds 8 combinations of 6", 4", and 2-1/2" deep food pans. PC300N is the only standard end loader to hold five 2-1/2" deep pans. PC600N has twice the capacity of the PC300N for extra storage. PC600N's separate compartments enable you to put hot food in one; cold in the other. Heat resistant to 200F; NSF listed.