Measurements: 24 in. x 24 in. Finish: Iron Oxide Patina, Green Patina over Copper paint, Green Patina over Bronze Material: PVC Installation Method: Glue-up (Instant Grab #310), Drop-in (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. NOTE: Hand painted ceiling tiles are NON-RETURNABLE, we highly recommend you to buy one tile before placing your order, to make sure it satisfies your expectations. Difference between low luster and gloss finish sheen, view here.