Stair type overview
Quarter Winder Stairs
36 in usable width, 80 in headroom. Quarter-winder stairs turn without a flat landing, so reorientation space is limited.
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Typical Stair Measurements
Clear width
36"
Tread depth
10"
Riser height
7.5"
Headroom
80"
Turn
90 deg
These are planning defaults. Measure your real stairway before buying, moving, or booking delivery.
Fit Notes
- Wedge treads remove the pause point movers use to rotate large items.
- Measure the narrow inner side and railing clearance.
- Rigid rectangular items should be checked conservatively.
What Fits?
3-seat couch
Often works if carried upright and the landing has enough pivot space.
Queen mattress
Usually clears on edge because thickness is the limiting dimension.
Tall dresser
May clear only if tilted and carried on the wider outside radius.
Upright piano
Weight, balance, and landing turns usually require professional movers or another route.
Check Your Specific Item
Enter your item dimensions and staircase details to test the exact width, turn, landing, and headroom constraints.
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