Knob Design and Excellent to Use? This 12 inch drop-in gas cooker has 2 independent knobs, you can control fire easily. The size of this gas cooktop is 12.2" 20.08"2.36, it's perfect for indoor or outdoor kitchens such as caravan, flat, barbecue, camping or beach.The surface of the 2 burner gas stove is made of stainless steel panels and has cast iron grates that are hard-wearing, durable and high temperature resistant. There is also a flame failure device to bring users a good sense of experience. In case the bulit-in 2 burner propane stove is not in working condition, or the gas is accidentally switched off in the middle of using, the gas channel will be shut off automatically to avoid gas leakage accidents and ensure the safety of your family.