Acoustic Ceiling Tiles. Does anyone have some extra white ceiling tiles they don’t need? We had a pipe leak and need to replace some. They are 24”x24” with a beveled edge. They have a very fine grain pattern. We think they could be Armstrong or USG but the previous owner didn’t leave any packaging that could identify them. This picture is an edge piece so it’s not 24”x24” but that’s the normal size. We could come see if what you have is a close enough match to work.