The "box of rags" pop-up paper towel dispenser is a great invention. The towels stay cleaner than paper towels on a roll, and they don't come unravelled in the wind. The boxes still have a habit of growing legs when you're not looking, though. This shelf helps alleviate that problem by giving the box a home on the wall of your trailer or shop. Holds a stardard 200-count box (not included) for easy dispensing.