Hoshizaki UF48B Reach-In Two Section Undercounter FreezerWith Hoshizaki's UF48B, you get a durable reach in undercounter freezer. It has a self contained rear mounted refrigeration system that uses environmentally friendly R290 hydrocarbon refrigerant. It is engineered to maintain NSF 7 temperatures in 100F ambient. It has a sturdy stainless steel exterior front, sides, and top as well as stainless steel interior top, sides, back, and floor. It has spring assisted, self closing doors with a stay open