Please note:This sign holder has 2 screw holes through the front AND back of the sign holder at the top edge due to it’s size. The holes are positioned such that you can insert a sign that is 18″ wide X 24″ high. Due to the size of this signholder, your shipping estimate in the shopping cart may be inaccurate We will contact you with the exact shipping cost before shipping if it is higher than estimated. Only available in Standard 1/8″ thickness. Note: Due to its size, the sign holder’s protective film is left on to prevent scratches and the edges are not flame polished like our smaller sign holders.