My father in law had an exterior vent cover that came off the eve of his house. It's an octagonal cover that fell off the house and broke. The house was built in the 50's. I contacted them and they were able to special order me one. Their technician was able to install it and seal it. And did excellent work.. He went all around the yard to make sure everything was just like a turn key operation. I was very impressed with them. It was an excellent price. I took a chance, they were actually the ones that did my father in laws work original work. After talking with them at length, they determined they could special order it. It took a little longer than I expected, but it was no fault of theirs, they were waiting on the manufacturer. It took about a month for them to get the part, but once they got it in they called me and went right out to do the work.