Mechanisms and methods to install upper restrictive barriers onto existing pull-out shelves to prevent or decrease the likelihood of the shelf contents from falling over the back or sides of the shelf.

Provided is a furniture part assembly that includes a fitting and a panel. One of the panel and the fitting is provided with a first connecting feature, and the other is provided with a second connecting feature for connecting with the first connecting feature. The first connecting feature includes a head portion and an extension portion connected to the head portion. The second connecting feature includes an entrance opening and a receiving room communicating with the entrance opening. The head portion is configured to enter the receiving room through the entrance opening, engage with a predetermined wall in the receiving room, and thereby connect the fitting and the panel in a detachable manner. A piece of furniture having the furniture part assembly is also provided.

Provided is a furniture part assembly that includes a fitting and a panel. One of the panel and the fitting is provided with a first connecting feature, and the other is provided with a second connecting feature for connecting with the first connecting feature. The first connecting feature includes a head portion and an extension portion connected to the head portion. The second connecting feature includes an entrance opening and a receiving room communicating with the entrance opening. The head portion is configured to enter the receiving room through the entrance opening, engage with a predetermined wall in the receiving room, and thereby connect the fitting and the panel in a detachable manner. A piece of furniture having the furniture part assembly is also provided.