Standard gutter widths typically range from 4 inches to 8 inches. The most common widths are 4 inches, 5 inches, 6 inches (5 is likely the most common). 4-inch gutters are often used for small structures (like sheds or gazebos), while 5-inch gutters are common for residential properties. 6-inch gutters are suitable for larger homes or areas with higher rainfall. 7 and 8-inch gutters are most commonly used for commercial or industrial buildings, but can be used on residential buildings in areas that have exceptionally heavy precipitation.