All designs are made to work with 5" shingle course height. Some designs may accommodate exposures as low as 4 3/4" or as much as 7"+. Please refer to each product description for the range of course height each design will fit.
Some larger designs may require a handful of small tweaks (cuts) if your existing shingles (or plan specifications) vary from the industry-standard 5" course (exposure) height. These are very small cuts that can be made with an exacto knife, coping saw or jigsaw.