They are installed with larger 3 x 4 downspouts for better water management. Before 5-inch gutters became omnipresent, smaller gutters generally had simple half-tube configurations. But the K-style profile has more depth. Of course, 5-inch K-type gutters outperform narrower models, as long as the drains and discharge pipes themselves allow as much unobstructed flow to the floor as possible.
If the gutter can cause stormwater to flow quickly out of the roof, but finds a choke point in the downspouts, the width of the gutters won't make much difference. This growth helped solve some of the previous problems related to gutter overflow during heavy rains, since larger watering holes could carry more water. On the other hand, if your roof plan is larger than 1,400 square feet, we recommend that you place 6-inch gutters, as this causes water to enter the gutters twice the amount of water. If it rains a lot in your area, 6-inch gutters might be a better option to help protect your home and landscape.
The optimal size of the gutter you need will depend on the amount of water the gutter needs to handle. Whatever size you choose, be sure to review the materials and components your contractor uses; you can learn more about what makes a seamless gutter system great here.