A full king mattress typically won't fit through a standard 30–32 inch doorway when standing upright. However, many come in split or flexible options (like a split king or bed-in-a-box) to ease delivery. It’s always smart to measure stairways, halls, and door widths in advance. https://www.impressionsartstore.com/luxury-carved-wood-king-size-bed-frame-with-ornate-headboard-footboard-by-impression-art-store