The adjustable hanger is the perfect choice for fascia installations when the fascia is 90° to the roof pitch. In other words, it is cut back and not plumb or vertical. The hanger has 8 different settings. From low roof slopes up to 12/12 pitch. It also has a 0° setting which is for plumb or vertical fascia installations. Typically, if you have an installation requiring this hanger, but also have some sections with vertical fascia, you don't have to buy two different products. The hanger is tested to the highest standards and strength classification available. Fasten the hanger with 2 stainless or exterior screws, min 1 3/4" long, per hanger. Calculate with one hanger per two feet of gutter.