Custom Arch Total Height
The total height of your custom arch is the total amount of height you’ll need in-the-clear, which includes the thickness of the arch. So with this in mind, how much height would you comfortably forgo to achieve your custom arch design? An easy way to determine this, is to make a mark on the side of the opening at the lowest point you’d still be comfortable. The distance from the header to the mark would be your total height. Since the design from your picture, drawing or sketch will ultimately determine the total height, this will temporarily act as the maximum height limitation when designing your custom arch kit. Enter your total height measurement in inches to the nearest 1/8” (.125). For example, if your custom arch is 1’-2 5/8” tall, you would enter 14.625
