STAIR ANGLE GUIDE
Use this guide to determine the angle of your stairs. If using angle washers, choose the angle washer with the angle that most closely matches your stairs.
| Stair Tread Width | Stair Riser Height | Angle or Slope |
|---|---|---|
| 12-1/2" | 5" | 22 degrees |
| 12/1-4" | 5-1/4" | 23 degrees |
| 12" | 5-1/2" | 24 degrees |
| 11-3/4" | 5-3/4" | 26 degrees |
| 11-1/2" | 6" | 27 degrees |
| 11-1/4" | 6-1/4" | 29 degrees |
| 11" | 6-1/2" | 30 degrees |
| 10-3/4" | 6-3/4" | 32 degrees |
| 10-1/2" | 7" | 33 degrees |
| 10-1/4" | 7-1/4" | 35 degrees |
| 10" | 7-1/2" | 36 degrees |
| 9-3/4" | 7-3/4" | 38 degrees |
| 9-1/2" | 8" | 40 degrees |