Evenly placed at 3" intervals measured on-center, Top Runners accent the peak of your pergola by giving a more complex sense of style and design.

The spacing of top runners is an aesthetic choice and does not affect the stability of the structure. However, the further apart the runners are spaced, the less shade the pergola will provide. Choosing the runners to be spaced 3” on-center will allow minimal sunshine below the structure. If more shade is desired, consider adding a lattice top.