Measurements: 23-3/4 in. x 23-3/4 in. Finish: Iron Oxide Patina, Green Patina over Copper paint. Material: PVC. Installation Method: Drop-In (15/16 Grid System). NOTE: Hand-painted ceiling tiles are NON-RETURNABLE. We highly recommend you buy a tile sample before placing your order to make sure it meets your expectations. Disclaimer: Faux patina is a technique created by activating paints containing metal fragments that oxidize as a result of a chemical reaction, just like in real life, but much faster, resulting in differences between tiles with the same finish, although they remain quite similar.