The assembly was difficult and the parts did not completely fit.  I managed to get the shelf assembled but had to to substitute some of the screws.  I have bought a number of items from Wayfair over the last few years and have always been completely delighted with the end results.  The difficulties encountered (it took over an hour to assemble) were a disappointing surprise.  However, I will continue to purchase items from Wayfair in the future as I feel this item was simply an anomaly.