【Black Tempered Glass Finish】The 4-burner built in gas stovetop is made of high quality black tempered glass with 2 heavy cast iron pan support grates, 4 melt-proof bakelite knobs and black burner covers. It is very easy to clean after cooking. The built-in size is 22.1'' x 18.9''(560mm x 480mm) while the whole product size is 23.0'' x 20.4'' x 3.9''(584mm x 518mm x 100mm). It is perfect to match different styles kitchen.【4 Powerful Cooking Burners】This dropin 24-inch gas cooker features 4 high efficiency sealed burners. The 4 burners include a 2,800BTU auxiliary burner, double 5,000BTU semi-rapid burners and a 9,500BTU wok burner(triple ring burner). These multiple powerful burners can meet your different cooking requirements.【2 Convertible Gas Supply + Electric Ignition Design】This dual fuel gas hob is designed for natural gas and liquid propane. The initial setting is for natural gas and there is a conversion kit for propane. The automatic electric pulse ignition uses a 120V AC power. 2 different gas supply options and the electric ignition will bring more convenience to your life.【Thermocouple Protection + ETL Certification】This 24 inches NG/LPG gas stove-top is ETL certified for US and Canada use including a CSA certified gas pressure regulator. The thermocouple flame-out failure divice system(FFD) will shutoff the gas automatically if a flame is not detected to ensure your safety in an emergency.