We follow the installation guide properly to install the rack 71 1/2" as our door is 76" in height.
When we hook up the door panel and find out an inch off the ground. We have no choice to bring down the rack.  Afterwards, we re-measure again, the rack height is 70.5/8".  Before installation, we can't find any video related to this product on youtube, therefore we read very carefully to avoid these issues. The product is well made heavy and good material. I like it very much but there are 2 holes on both sides of the tiles that we have to deal with.