There is a serious design flaw which makes attaching the top virtually impossible, at least with the top I received.  First of all, the product shipped with two right side panels instead of a right and left one.  A replacement part was sent, and that was the wrong part.  Finally, the correct part shipped.  The assembly was simple except for attaching the hinged top.  It simply could not be done.  I have been assembling items for 50 years, and even with tools it was impossible to get the top into the hinges without damaging the material.  Either the design is flawed and unacceptable or this was a manufacturing error.  Wayfair did issue a refund.