Polyester Blend Versatile, 100% waterproof shelving unit designed for showers and restrooms, or any room you choose Manufactured from robust 3mm, high quality 304 stainless-steel Ultra-thin frame provides an exquisite, finished look Sleek 10mm border blends well with any style Easy-to-install with detailed instructions included Rectangular 12" x 24" Gunmetal Black finish double shelf Periodically applying automotive spray wax will protect from hard water stains and mineral deposits Clean with mild liquid soap and non-abrasive sponge then rinse with clean water Never use chemicals or abrasives to clean the Niche, these can damage the factory finish Manufacturer’s Limited Lifetime Warranty