Funny, we actually have the Polder Thermometer Probe but had no idea that they made other products like this Double Rack Towel Shelf. This chrome bar shelf has two racks for towels and one larger shelf on the top for other items. It screws right into the wall and the top shelf is about ten inches deep. It’s rather nice looking and not terribly expensive - I’ve also read that if needed, you could get two and interchange the shelves with one of the racks in order to increase the shelves.
available at Amazon.com