Shaker cabinets use a five-piece door construction with a recessed center panel, providing structural balance and classic visual depth. Slab cabinets feature a flat, single-panel door that emphasizes minimalism and manufacturing efficiency. Frame cabinets refer to face-frame construction, where a solid wood frame is attached to the cabinet box front, increasing rigidity and hinge stability compared to frameless systems. Their differences lie in joinery method, material behavior, installation process, durability performance, and overall project cost impact.