Stair type overview
Imperial Stairs
48 in usable width, 80 in headroom. Imperial stairs are grand split-flight stairs with strong landing clearance for large moves.
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Typical Stair Measurements
Clear width
48"
Tread depth
11"
Riser height
7"
Headroom
80"
Landing
72"
Turn
180 deg
These are planning defaults. Measure your real stairway before buying, moving, or booking delivery.
Fit Notes
- Wide lower flights usually help bulky furniture.
- Newel posts and decorative railings can still reduce usable width.
- Measure each branch separately before choosing the route.
What Fits?
3-seat couch
Typically works if the landing is open.
King mattress
Usually clears on edge.
Folded treadmill
Remove console parts when possible and check landing swing clearance.
Upright piano
Possible only with professional handling and verified landing clearance.
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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