This Drop-In Frost Top is designed to hold 2 sheet pans in a long left to right configuration. It features a heavy-gauge galvanized steel exterior housing, an on/off toggle switch, and a perimeter gasket. The unit also has self-contained refrigeration with R290 refrigerant and a 1/5 HP compressor. A cutout of 54.60" x 21.10" is required for installation. This product is cUL, UL, and NSF certified. We also offer a variety of other frost top and cold slab units.