9 inch x 48 inch Aluminum Stair Treads/Nosing-Double Cavity

The 48-inch length is specifically sized for wider industrial and commercial staircases where 36-inch treads would leave exposed edges, creating a tripping hazard. Choose this 9-inch depth model when your stair tread measures approximately 9 inches from the front edge to the riser. The double-cavity channels hold significantly more anti-slip abrasive material than single-cavity designs, providing enhanced traction in environments exposed to water, oil, or chemical spills. Always measure your stair width before ordering and select screws rated for your stair substrate, whether concrete, steel, or wood.