It’s a beautiful mailbox, but putting it together wasn’t so easy. The instructions in the box didn’t match the product number and we had to improvise. We needed to purchase a custom-cut mounting board from Lowe’s because the box is a bit larger than most and the boards sold at the hardware stores were too small. We used a pre-mixed mailbox base that isn’t exactly concrete but is supposed to work in the same way. The post is secure, but definitely very wobbly  when we open the box. That’s another issue - the magnet to open and close the box is very strong and needs aa strong tug to get it open. Bbbbbbbbbbbbbb