4 open only for 4 scaffolds 5 open only for 5 legs! Six Advantages of Energy Saving Hoods: 1. Healthy 2. Time saving 3.Air saving 4.Windproof 5.Environmental Protection 6.Efficient 1 energy saving principle: Because the flame of the gas hood is exposed in the air, Easy to convection, Causes massive heat distribution. After using the product, after three gatherings, four reflections have made the flames more concentrated, Reflect the heat to the bottom of the pot, Firepower doubled. Cooking is time saving, the smaller the air valve opens, the better the saving effect. Ordinary moulding saves 50 - 56. 2. Material: This product adopts imported environmental alloys, High temperature refractory material, Burns do not deform, No rust, Durable. III. This product is easy to install, there is no need to modify the stove. Widely used in liquefied gas, Natural gas, Pipeline gas, Air mixing, etc...