A great choice for a lobby with windows, the NoTrax Polynib Indoor Rug - Brown can be used in doorways, lobbies, and foyers. This rug is made of polypropylene and features a vinyl backing and tightly nibbed loop that entraps dirt and debris for an always-clean appearance. At only 0.25 inches thick and with 24 ounces of needle-punched yarn per square yard, this mat can be used with narrow clearance doorways. This mat is a recommended and approved product as part of the GreenTRAX program for "Green Cleaning" environments. Available in a variety of sizes, this rug is intended for commercial use.