I ordered a skylight and asked for it to be 51 and 1/8 inches x 51 1/8 inches. I received a skylight that was 52 and 3/8 inches by 52 and 3/8 inches. When I brought the Skylight back due to the mistake, I was told that they add 1 and 3/4 inches to any number that you tell them. It might have been nice for them to tell me that ahead of time so that I could have subtracted one in three quarter inches from the actual number that I needed. They refused to refund my $600, and said it was due to miscommunication. The only miscommunication was them not communicating that it didn't matter what number I told them they were going to add one and three quarters inches to it. This is the most ridiculous thing I have ever heard in my life! I am now out $600 and stuck with a skylight that doesn't fit. Their customer service is absolutely atrocious!