Update- this system has been a blessing and holds up well 2 years in. 
Overall I am happy with the product. I knew I wasn’t buying custom built-ins. However, the first order I received for this system had different colored parts for the drawers (white brown and gray). They resent a new order (so I had to wait another month for the replacement). I opened the replacement and there are dark gray drawers that have a white face in this and a white support bar under the bottom (for each drawer). At least it was just 2 colors this time and the dark gray seems fine once assembled. Very odd, but I didn’t want to wait another month, including trying to figure out if they even had a  drawer that was all white (as I think it should be). Also, as others noted, they don’t align the well with other units (leveling and all that is very difficult).