Most of this product came with excellent wood, great hardware, good setup instructions, the casters are high quality, and it included extra hardware.  Why go through all this trouble and then put a cardboard back on it?  It's a kitchen island.  The back is not going to be against a wall!  Things spill.  How do you clean cardboard?  At least the cardboard bottoms to the drawers get screwed in.  The cardboard on the back has movement.  Why even put cardboard in the drawers?  This island would have been fantastic without the cardboard.  I'm just going to live with it being a piece of junk in my kitchen until I replace the cardboard or find something made of wood.