Our new horizontal fence! We used 1x6” cedar boards, with posts spaced 6’ apart. We wanted it 8’ tall, but our lot is sloped and I didn't want the fence to stair-step or slope with it. I have no idea how they figured all that out...but our fence is completely level across the top from one side to the other. Which means it ranges from 8 to 10’ tall, depending on the slope of the lot.