A built-in range hood is a range hood that you build into a kitchen cabinet. Because the range hood is built-in, it blends into the design of your kitchen beautifully. This is handy if you don't want a noticeable range hood, but you do want a kitchen that's free of smells. A built-in range hood is suitable for the ventilation system or recirculation system. The dimensions of a built-in range hood are somewhere between 53 and 90cm wide.