Stainless Steel 304 #4 is a brushed finish stainless, 304 refers to the grade of the metal and #4 refers to the finish. This is most commonly seen in commercial kitchens as backsplashes and corner guards. Also used for door kick plates, as well as in schools, hospitals and other food industries where sanitation and cleanliness is a must. All of our Stainless Steel Sheet's come with a protective plastic paper on one side to protect the finish during fabrication and installation, you peel it off after you get everything safely and properly in place. 304 stainless steel is austenitic [aw-stuh-nit-ik], meaning it will not attract or hold a magnet, if you need a magnetic stainless steel 430 grade is what you are looking for.