5k gutters are the most common in North America. They can handle a lot of rainwater and are the perfect style and size for most homes. They're lightweight and can be installed seamlessly.
Box Gutters are commonly used in large industrial & commercial applications, but the smaller 5" and 6" profile can also commonly be found in more modern homes.
6k gutters handle high water volumes, ideal for heavy rainfall areas or homes with large/metal roofs. They reduce overflow risks, offering excellent protection against water damage, especially in regions prone to intense rain.