We take the advanced tempered glass with anti-explosion cloth on the background ,it can prevent the explode when abnormal condition(Such as unequel pressure,flame is not normal etc). Advanced Aluminum bound edge and slope edge design make glass cooktop is more stble,easy to clean and looks beautiful.Product Features Direction 1,Our product size and cut hole size will be show in the insert pictures. There are two type of burners: 3.3KW triple ring work burner,1.75kw Semi Rapid burner; Which make all kinds of heating power output.The cast iron support are heavy and stable, coated with enamel , make it high temperature resistance and not easy to rust. the four feet under the cooker make it can use as table-top style also, easy to cook all kinds of food as you like. 2,This products is suitable for Nature Gas source but there are convert nozzle and BS brass joint for LPG source in the package.There is adjustment valve for flame adjustment. When you think the minimum flame is not enough,it can adjust in the place of knob and We rather professional to do so .If you want to change the gas source, please invite professional.Function attention 1,Our product take 110 Voltage AC power ignition but if outside without AC power, it can ignition with lighter or other flame. 2,The figure of product will confirm by main product picture. 3, Our product have 100% inspection on whole products, gas leakage inspection and valves inspection and enjoy our products safely. 4,After installation of our product, please check all the joints and make sure they are sealed well.Put the burner set, burner caps and woks are in the right position. 5,You can click the blue Delikit after the Sold by will find more products in our shop. 6,If you have any other requirement on products or service please leave your message in our Customer Questions& answers in the website。