If you have 128 linear feet of fence with 8-foot wide panels, you'll need 16 panels. If you're using individual pickets for installing the 6-foot privacy fence, calculate the total length of the ...

It's recommended that at least one third of the length should be buried. So, in the case of a 6-by-8 fence panel, a 9-foot post is needed so that 3 feet of it are in the ground.

Most privacy fence designs use a standard spacing of 8 feet. However, if you're using pre-built panels, you might need to have posts spaced 6 or 8 feet apart to match the panels.