Quantum Bin Louvered wall Rack panel 27x21 by Quantum. $29.48. Louvered Wall PanelSteel Louvered Panel16 Gauge cold rolled steelGrey baked enamel finishHangs on wall27&quot; x 21&quot;QLP-2721(see chart below to determine how many of which bins this will hold)Bins sold separately and are NOT includedUltra bins will hang on panels or railings in a wide range of configurations designed to meet all application needs.