Wall cabinet is an excellent product.  It is sturdy and well built.  It was a bit tricky getting bottom, 2 side panels, and top to stay together during assembly, and thus it took a few trys to get them to stay together during assembly.  Only structural concern is that backing panel is made of thin plastic and comes in 2 pieces, with a plastic channel to connect them together.  Then you screw this to back of cabinet.  It would have been better if back panel was of a single piece of thin wood.  
wood, like Luna, used for