How is the angle of the stair calculated?
Pro Series stair railing is offered to fit 32-, 35- and 37-degree stairs. The angle is found using the rise and run measurements of the stair. For example, a stairway with a 7″ rise and 10″ run would require a 35-degree stair rail. The easiest way to determine the angle is with a universal protractor, which can be found at most building supply centers and hardware stores. For more information, view the Stair Installation Instructions.
