WE are proud to present the Wall Mount Periodic Table which is the newest version of this line of products. The collection includes pure samples of all the alkali metals. This product includes 83 total element samples. All of the samples and artwork have been cast into acrylic. The artwork and element samples have been cast in such a way that they appear to be floating in the middle of the acrylic. The size of the artwork measures 20 1/2 inches wide by 15 1/2 inches tall. This does not include the size of the frame. The product is safe to handle but for any specific questions feel free to contact us directly.