Assembly problem.  The Left Side Panel will not assemble.  The holes on the left side panel have plastic in them that will not allow the matching pegs to snap into place.  The unit is not functional at this point. I will probably return. I do NOT like fixing problems for bad quality control. Poor quality is a waste time and shipping $$. PLUS my old dog must wait longer for a replacement. GRRRRRR   The Instructions were easy to read and clear.  Will be great once I get a unit that can be snapped together. At this point not impressed. This was my first order from Wayfair.