I am looking to build spice rack pull outs for kitchen and saw a few pre-made models such as the one below. It looks to be using a regular side-mount drawer slide but flat, however it isn't a standard undermount type slide. I would suspect that a side mount slide will not fair well in a flat mounted orientation. Any idea what kind of slide is being used here?
https://www.upperslide.com/product-p...large-us-303dl