This Drop-In Frost Top is designed to hold 1 sheet pan. It has a heavy-gauge galvanized steel exterior housing and features an on/off toggle switch. The unit also includes a perimeter gasket for added insulation. It has self-contained refrigeration and uses R290 refrigerant. The unit is powered by a 1/5 HP motor. A cutout of 28.60" x 21.10" is required for installation. The product is cUL, UL, and NSF certified. We also offer a variety of other frost top and cold slab units.