Love the Wide Column Wall Shelf for my office behind the desk as a display shelf.  It was too long for where I wanted to use it so we easily cut off about 8 inches including one of the shelves with an electric saw.  The shelves are shallow at only 6 inches deep by 12 inches wide but it was perfect for what I wanted.  It is surprisingly heavy.  It's a thick black durable laminate (not your typical paper laminate) over pressed wood.  Not just paper coated by any means. You could wipe it off with a wet washrag and not damage it or warp it no problem.  I love it.  
Note:  The photos I posted are of the shelf AFTER we cut off the 8 inches including one of the shelves 
You'll notice mine has only 4 shelves instead of the 5 it comes with.