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 12 deep food pans. PC300N is the only standard end loader to hold five 2 12 deep pans. PC600N has twice the capacity of the PC300N for extra storage. PC600Ns separate compartments enable you to put hot food in one cold in the other. Heat resistant to 200F NSF listed.