I got soundproof windows installed on the interior of my current windows (don't ever get them, it's a scam), and I therefore had needed extension brackets for my vertical blinds and boxes placed around the trimming of my windows (for the shutters). I had called both Z blinds and Central Valley Blinds and their reaction and helpfulness could not have been more dissimilar. Z blinds (the ones who probably installed my blinds) were very quick on the phone and stated that they could only give me an estimate if they came out to look at the shutters. The visit would cost $75. I asked if they had the extension brackets for the vertical blinds, and they had no idea what I was talking about. I called Central Valley Blinds and spoke to Abe who was super helpful and informative. He spoke to me for a considerable amount of time on the phone and looked at the pictures that I had sent him via email. He said that he was willing to come out for free. He stated that the most cost-efficient means of adjusting my shutters may be to hire a carpenter, but that he would be willing to come out and see what alternative would be best. I also asked about the extension brackets for the vertical blinds. He knew exactly what I was talking about, and told me to stop by. I picked up the extension brackets, and he carefully and in great detail explained how to install them. On a separate occasion (11/03/14), I had Jack and a worker come by to install additional brackets for the blinds, and I was given an order of side pieces for the valence for free (I should've been charged for them). Central Valley Blinds have been the most honest of contractors that I have ever dealt with. I wish that I had done business with them originally rather than Z blinds.