We install 5" and 6" Seamless Gutters .027 with 3x4 Downspouts .019
We use gutter screws to anchor the gutter to the structure and pop rivets where practical.
Maxdrains are highly recommended with your new gutters for two reasons. To allow debris to wash out of gutter and water to drain instantly, not vortex.
If your gutters have too much debris falling on or in them, we recommend Leafthrower Gutter Covers.