Windmax 24 Inches 3.3KW Kitchen Glass Built-in 4 Burners Gas Hob Cooktop Cook Top Nub. Of gas burners:4 ;Cut-out Size: 18  x 21  " ( 550*470mm) ;With 1.5m Power Cable Installation: Built-In ;Ignition Type: Pulse Gas Type: LPG/NG. (Default NG ,if you want to connect with LPG gas, please remove the NG gas kit) ; Note:the LPG conversion kit included excepte the gas regulator Main Burner Heat Input: 3300W.; Burner Heat input: 3.3+2.75KW. Attention: All the steel stainless items can not be cleaned with corrosive chemicals, such as strong acids,strong alkalies etc; And in case of scratches, frictional cleaning materials like steel wool shall not be used