I have a hollow door into my pantry and I put two of these on that door. They're light and the screws were short enough to fit through the one side of the door but not come out the other side. LOVE this spice rack. It gave me opportunity to alphabetize my spices AND to see everything at first glance! I don't have to go through bottles and bottles of spices to find what I have. Some of the wiring is a little uneven but that's a workable issue.