Although standard commercial range hoods are typically 48 inches wide, they come in a variety of lengths, such as 4 feet, 9 feet, 13 feet and 20 feet. Very large, 54-inch wide versions are also available.
Range hoods are essential to commercial kitchens because they remove odors, improve air quality and reduce humidity by removing moisture. In addition to improving comfort levels, lower humidity also helps prevent the growth of mold, mildew and bacteria. This helps avoid health code violations.
Commercial hoods are generally made of heavy-duty stainless steel. They are designed to meet certain safety specifications, such as those from the National Fire Protection Association, National Sanitation Foundation and Underwriters Laboratories.