Range hood heights, depths and widths differ by hood type and even from model to model, but there are a few standard size ranges you can count on. Range hoods are typically available in widths that mirror those of cooktops, spanning about 24 to 42 inches, and hood depths most often sit between 18 and 22 inches. Range hood heights are highly dependent on the hood type and can be anywhere from 4 to 29 inches tall.