Dimensions are true to specification. 

Package comes with 7 or so pieces that you assemble with the screws they include, no surprises. You need a screw driver but anything will do. 

The shelves are a little flimsy if you're hoping to put some real weight on there. For example, the 1 liter Listerine bottle I have is heavy enough that it bends the shelf somewhat. For towels and little things it doesn't matter.