Negotiating The Narrowest Points
Now thinking of the width of your chosen product, the narrowest point to consider will often involve the staircase again, particularly where there is a turn. This will be a measurement taken across a corner where two walls meet, at the point where an obstruction, such as a bannister, is met.
Check the turns and obstructions.
It’s also a good idea to remove any pictures or freestanding lamps that might get knocked en route.