I installed this myself but I’m handy that way.  It’s really heavy and you will need help to lift the glass. I recommend most people should get it installed.   The adjustability is really an important feature.  The quality is outstanding.  Only one complaint:-The instructions on how to take apart the rollers was not accurate and they would not come apart so that was the most frustrating part.  I finally figured it out after an hour and I’m an engineer but really they need to fix those instructions.  I’m super happy with this product and recommend it.