The left leg hole was not aligned to the horizontal bar in the very first step. I had to use a file and make the hole a bit bigger. Other than that, the installation was easy, though it took about couple of hours. The finished product is well built and parts are of good quality. Sit/Stand function works well, though it took a couple of unplugging and plugging back initially to get it working. I like that it is easy to move around without scratching the hardwood surface. Overall I am satisfied with the purchase.