Great product, very fast delivery   Only reason for 4 rather than 5 is that on one  end piece, the connecting hole didn’t Aline with the corresponding pointed pin on the other piece and I had to use a crowbar to get them to line up.  The elastic on the cover. Was so tight that I couldn’t get it over the final corner (at 82, I don’t have the hand strength anymore) so a neighbor had to help   The unit I’d beautifully designed, very solidly built and very easy to assemble (excepting items mentioned above). Overall we couldn’t be more pleased