Privacy Lattice Fence base panels have 1" square openings. The lattice strips are 1" wide and approximately 5/8" thick at the joint....joinery is laid-on and is glued and brad nailed. All panels are finished off with a cap rail at the top and kickboard (base moldings) on both the front and back on the bottom. An additional 1" square strip of cedar is attached to the back of the panel at the ends and is predrilled. The panel is attached to the post by screwing through these holes with the provided screws.