The basics These exclusive Ultimates rack dividers stick way out so you can easily see the letters, names, size etc. as you scan down the rows.  The benefits These dividers are blank giving you the option to use them as size dividers or clothes separators, or dividers for multiple people use. There is a small slit that allows the divider to be placed on a rack. The specs They are 18 1/8” wide and 6” high. Fits any round or square tubing rolling rack or hangrod up to 1-1/4”. They only need 1 1/8” clearance above the hangrail.