These guys are great! The ONLY thing you need to do is... BE READY / Prepare your space for the install day. If you get your area and walls ready after getting the first notice... you'll be fine. My window moved a little, but I also followed the advice from others to be ready on my end. The installers arrived early, had all the necessary tools, were very professional, recommended an install method that helped me save a bit on the mirrors, gave helpful tips, and finished quickly and safely. I will surely be calling again and will recommend them whenever I can.