I have also just received my hood vents in the mail and could not be more pleased with the product/service I received from grndfx. I was expecting a good product but the quality of these vents surpassed my expectations. Great instructions, all necessary hardware, and very high quality parts. Mounting the vents does require some minimal drilling but all the hard work is done . If you are thinking about buying these then don’t wait, you will not be disappointed. I would buy from grndfx again in a second.