Cutting a prehung exterior door

摘要

Most times when you need a prehung exterior door that's shorter than normal, it's easiest to order it from the lumberyard. It's possible, however, to shorten the unit yourself. Manufacturers typically allow wood doors to be trimmed by 1∕2 in. at the top and 11∕2 in. at the bottom. You can cut more away from the bottom without hitting one of the dowels that hold the door together. If possible, I like to cut the top of a prehung exterior door because then I don't need to remove and reinstall the door-bottom weatherstripping. Here, though, enough had to come off that I cut the bottom.