How can I safely install a frameless melamine wall cabinet that has a thin pressboard backing, and no hanging rail?
Install a &quot;cleat&quot; on the wall and hang the cabinet on the cleat. Screw through the thin backing into the cleat. The cleat would be thick enough to protrude slightly past the sides and top. One or two screws holding the cleat onto the wall would ideally be into a stud. Two other screws holding the cleat could be into drywall near the ends of the cleat to resist rotation.