These prep tables feature heavy-gauge stainless and galvanized steel construction, thermoformed ABS plastic interior and door liners with 2-in. foamed-in place insulation. A front-breathing, environmentally friendly R290 refrigeration system with hot-gas condensate evaporator features separate expansion valves and on/ off switches for the base and raised rail so the rail can be turned off at night to defrost and save energy. The rail accommodates standard and fractional size hotel pans (with adapter bars by others) and has removable hinged stainless covers. Sizes range from 48-in.W to 114-in.W.