Tempered Glass---we used it as deck railing. The edges are smooth and all 3 are 29" tall (or wide--they are rectangles) by 76" & 52" and 22". In other words: 29 x 76 29 x 52 29 x 22 Take a look at the measuring tape in the 3rd pic for thickness. Will trade for potting soil or W.H.Y. See other ads for great almost-free/barter items Gorge area, leave number if interested.