Introducing the 2125 IllumiTread Retrofit Stair Nosing, our most cost-effective stair nosing to date. The extrusion has a very low profile (33% thinner than our 4120) while still accommodating our high-performing PL strip. It also has been designed to entirely eliminate the need for abrasive infill with a textured surface providing ultra-high traction. The 2125 is installed with adhesive only, which saves on labor compared to fasteners. Also, the adhesive installation process is quieter and less disruptive to day-to-day business operations when retrofitting in occupied buildings.