Will it fit? A cautious furniture route check
Enter the item's overall size and each tight spot on the way in: doors, hallway corners, stairs, the room or the van. Carry Clearance checks every step with tested geometry and a safety margin. It tells you probably fits, too tight to call or won't fit by the moves we check. It never says it definitely fits.
1 · The item
Measure the overall box: the widest, deepest and tallest points, including legs, arms, handles, hinges and packaging. The safety margin (default 2 in / 5.1 cm, an assumption) is added to every dimension.
2 · The route, in order
Measure clear openings: a door's width with it open at 90°, from the stop strip to the face of the open door; its height under the head stop or threshold. Measure stairs between handrails. Measure the headroom vertically from the stair nosings.