Why are plumb and level checks important when installing base cabinets?

• A. They speed up installation.
• B. They prevent moisture absorption.
• C. They ensure doors align, drawers operate smoothly, and the installation is stable.
• D. They keep pests away.

Answer: (C)

Ensuring base cabinets are plumb and level is essential because it directly affects how the cabinet fronts, doors, and drawers align and operate. Plumb means the cabinet is vertical, so its sides stay true and gaps stay even with adjacent cabinetry. Level means the cabinet sits flat on the floor so the front plane is true, allowing doors to swing properly and drawers to slide smoothly. When these checks are done, the installation remains stable, doors don’t rub, and drawers don’t bind, even as the room settles or weight is added over time. To achieve this, you measure at multiple points, adjust shims or fasteners as needed, and recheck before final fastening. While other factors like speed, moisture, or pests matter in different contexts, plumb and level checks specifically ensure alignment, operation, and long-term stability of the base cabinets.