Pro Tips: How To Set Posts & Poles | DIY Post Setting Guide - Sakrete
Place the post in the hole, ensuring it is level and plumb. Fill the hole with concrete, leaving about 3–5 inches from the surface to backfill with dirt. 25312-0068404
For a visual walkthrough, you can view the assembly video for the Coolidge Post Go to product viewer dialog for this item. on YouTube. Pro Tips: How To Set Posts & Poles
Once the post is secure and the concrete has set (if applicable), attach your mailbox to the top or cross-arm using the mounting screws. 25312-0068404