Very disappointed in this product.  My first inclination that something was wrong was when I opened the box to find that all of the hardware was loose in the box.  The cardboard box that the hardware was shipped in had fallen apart, allowing its contents to be distributed all through the carton.  The main shipping carton also had punctures in it from the shipping process.  After inventorying all of the pieces and parts, I discovered that not all of the hardware was there and had to make a trip to Lowes to get replacement screws.  Finally, when putting it together, not all of the pre-drilled holes were in place, causing the sliding tray to be useless as its tracker can not be secured to the seat properly.  I will be contacting the maker and requesting a replacement.