Stainless steel hood, also known as outlet is a new patented product, decorated in a variety of building external walls of the exhaust, this type of design for buildings, factories, shopping malls and residential kitchen, bathroom and pump drainage pipe use, both to beautify the role of the external walls, but also the practicality of wind and rain, it kin long durable, non-aging, it adds a modern flair to modern construction, this outlet contains one hundred blades and stainless steel insect nets King attached to the Ministry three spring undercut slices, not required when you install screws, as long as the round exhaust ports pushed into the hole to undercut slices stuck to the vent can be fixed.