An exhaust hood is thermo-mechanical device that is fixed over the top of ovens in a kitchen to facilitate the easy movement of unwanted gas, fumes, smoke, steams, humidity, heat and odor to outside of kitchen room. So exhaust hoods keeps your kitchen very clean and comfortable. In a commercial kitchen, generation of heat, odor, fumes and smokes are very common. These things have to be driven out very quickly; otherwise this will result in suffocation and uncomfortable situation for the persons inside.