Ground Screw Dig a 36” deep hole in the desired location and insert a 4x4 wood post. Leave 48" exposed above ground. Fill the hole with premix concrete (not included) and level the wood post. Once the concrete has cured, slide the decorative post (part 1) over the wood 4x4 ensuring that the base sits flush with the ground. Optional Ground Screw: Twist the screw into the ground and attach a 4x4 post (approx. 48" length, not included) with the 8x {ag bolts provided. Slide the decorative post over the 4x4.