Shim

A thin, tapered wedge of wood, composite, or plastic used during cabinet installation to level and plumb cabinets against uneven walls and floors. Shims are inserted between the cabinet and the wall or floor surface, then trimmed flush after the cabinet is secured. Proper shimming is essential for achieving level countertops, aligned doors, and smooth drawer operation in any cabinet installation.

Specifying this for a job? Captivating Pro members buy at 20–40% off retail and get cut sheets before rough-in.