Thank you for your review of our Great Lakes Tin Hamilton Lay-In Tin Ceiling Tile in Copper. We apologize for any issues you have experienced with your order. Our Lay-in Tiles measure approximately 23.75" x 23.75" in actual dimensions. In addition, there is also a Nail-up version of this tile in the same style and color that can be found at the link below,
https://www.homedepot.com/p/Great-Lakes-Tin-Hamilton-2-ft-x-2-ft-Nail-Up-Tin-Ceiling-Tile-in-Copper-T52-08/205861676
The above tiles measure approximately 24.5" x 24.5" since they include an overlap for the nail up application. If you believe you have received the incorrect tiles, please feel free to reach out to Home Depot directly and have them contact our customer care team at 800.434.3750 and we would be happy to further assist. Thank you again.