Simple Library Style Book Display Stand

My wife wanted a simple book stand to use on some new book cases we have built and searching on Maker World and other search engines didn't yield the elegant simple design we remember from school and public libraries (in the UK at least), so I designed my own. This is a very simple replica of the ones often found that are made of bent acrylic, there's no fancy details, just a plain and simple book stand, that leans a book back by about 30 degrees. They're only 2mm thick so comprise of just walls, no infill, and I have provided two plates: one with a single stand and one with 5 nested stands that can be printed together. UPDATE:The original model has a degree of inclination of 30degrees I have added a second print profile with a steeper angle at 20degrees so the books will stand more upright.