I initially ordered a middle drain shower base...but upon reflection realized that it would complicate having a non-slip mat on the shower floor ( the drain would be covered by the average style mat). So called Wayfair...and the customer rep was so gracious and pleasant.  She canceled the middle drain order ( which was in transit) and ordered a replacement with a better placed drain.  There was a small fee to turn the original order back...but the ease of resolving my dilemma and the helpful and understandiing assistance of the customer service person...reinforced my strong belief in Wayfair practices.