Different from other electric radiant cooktop, the 30” electric cooktop has added metal frame which can prevent the glass from being broken due to excessive collision and prolong the life of the electric stovetop. The stylish and elegant silver metal frame not only protects the glass, but also makes the knob electric stove look better overall. Drop-in electric cooktop fits perfectly into every cabinet. No complicated buttons, easy to operate and use. This kind of knob-conrtol electric cooktop is very suitable for the elderly, suitable for people with poor eyesight. Many elderly people don’t know how to use other sensor touch cooktop, and their eyesight can’t see the small buttons. So they need a knob type electric stovetop more, which is more convenient for them to operate. The 30 ceramic cooktop equipped with 4 powerful burners:1200W+1200W+1800W+1250/2500W(Dual). Every burner of the drop-in electric cooktop has 9 power levels, rotating the Knob to contrtol the power from 0-9 levels, perfect for braise, fry, deep fry, stir-fry, roast, and more. Built-in electric cooktop requires professional wiring to 220-240V, NO plug. The 30 inch cooktop is specially designed for safety, having various safety protection functions, such as hot surface indicator, which remind you that the temperature is too high; Over-temperature Protection, automatic safety shut off function, when it detects that the internal temperature of the 30 electric stovetop is too high, it will automatically shut down. This kinds of ceramic cooktop has no electromagnetic radiation, is harmless to the human body. The built in ceramic hob can be used with any type of cookware, such as aluminium pans, copper pans, cast iron frying pans and non-magnetic stainless steel pans can heats cookware efficiently with minimal heat loss. Glass cooktop electric is easy to clean, simply wipe with a clean cloth when cool. 220v No Outlet Plug. Glass Protection Metal Frame. 4 powerful burner: 1200W+1200W+1800W+1250/2500W(Dual). Electrical Supply: AC220-240V / 50-60Hz. Cut-out Size:730mm(28.74 in) x 490mm(19.3 in). StoveTop Size:770mm(30.3 in) x 520mm(20.5 in) x 54mm(5.12 in).