Floating Wall-Mount Av Shelf Is 5Mm Thick Black Tempered Glass With An Unobstructed Surface - Shelf Is Height Adjustable Along The 13.6In Wall Bracket - Steel Bracket Supports The Shelf Up To 15.4Lbs; Aluminum Wall Bracket Is Sturdy And Lightweight; Tempered Glass Is More Resisitant To Scratches/Shattering - Mounts To A Single Wall Stud/Concrete Wall (Wood Screws/Concrete Anchors Are Included) - Cable Management Cutouts Along The Wall Mount Bracket; Pre-Scored Knockouts On The Top/Bottom Caps.