I needed something narrower than 12 inches wide to fit in the space between the sink cabinet and the toilet. At 6.25". This came fully assembled except for the two knobs on the front. Easy-peasy to remedy that. Another reviewer wrote that the bottom roll-out cabinet will be difficult to open if on a rug. This is true. Make sure you can have a flat rug-free area for the bottom cabinet drawer to roll out easily or this cabinet may not work well for you.