I saw this type of tub door and Europe and wanted one for my home in California.  The materials are high quality and it was very easy to install.  The instructions are well written and one needs to drill about 6 holes total to install.  Came with spare parts in case you drop something.  

We had new tile put in our tub area and didn't want to hide it with a shower curtain.  Traditional sliding tub doors always block 1/2 of the tub and seen to be in the way if kids are bathing.  This door swings open and folds in half to allow you to more it 100% out of a way during bath time.  Just as easy to swing back into place.  We have had it for a month and love it, recommending it to our friends.