We offer a Drop-In Frost Top with a stainless steel 1" elevated top that includes a drain trough and 2" overhang. The exterior housing is made of galvanized steel. It features an on/off toggle switch and self-contained refrigeration with R290 refrigerant. The unit requires a cutout size of 44-5/8" x 25" and is cUL, UL, and NSF certified. We also have other frost top and cold slab units available.