These bathroom niche shelves are built to last with marine grade 316 stainless steel that's highly resistant to rust and corrosion. Made to fit perfectly in 12 inch niches with a 1/8 inch grout line, they are practically ready for your shower renovation. The design includes built-in soap storage and a towel beam, offering both function and convenience for your daily bathroom routine.","Installing these shelves is a breeze, as they can be placed before tile installation, making your bathroom upgrade smoother. Their 3mm thickness and precise dimensions ensure a seamless fit and long-lasting durability. Couples with their practical features, such as the included 1/2-inch gap to prevent soap scum build-up, they are a smart upgrade to your bathroom hardware needs.