I was impressed by the prompt shipping, quality freight shipper who scheduled and delivered on time, and by the product itself. The installation instructions were fairly clear, and the provided links to the videos made it a breeze. After two weeks of rain, I have yet to see water inside, so I'm very happy at this point. The only hangup was that the factory left the thread inserts out on the left side for the ruler. I don't see a need for the ruler, so I left it off and filled the holes. View more reviews...