Hess Windows recently put in a large window for us. It was a big job and they were up to the challenge. When they first arrived they realized they needed another person, so they immediately called and had another person join the crew. The window comes with an excellent warranty. We have had some heavy rain since the window was put in and there is no leaking whatsoever. The price was a little more than another place but the peace of mind of the extended warranty and the quick and courteous service was worth the extra money.