This headboard is definitely shorter in height than it looks in the photo. Should have read the reviews more carefully. If I mount the headboard to the max height of my bed frame, I was still not able to fit a 12" thick mattress. I have a set of standard boxspring so it was not particularly tall. It could only fit an 8" mattress. I had to mount the bottom-most mounting hole on the headboard to the top-most mounting hole on my bed frame to get about an 11.5" gap. The mattress doesn't go fully flush with the box spring but close enough. Even with only 1 mounting screw on each side, the headboard seems secure enough. Wish Wayfair would publish headboard specs like the height between the base of the headboard to the top of the first mounting hole. I guess I could choose to return it but returning a headboard isn't like returning a cable.