Installed tiles in 28’ X 33’ space in basement. They were just what we wanted. We used 18 boxes, but we had one box that was long by 1/16th of an inch. Customer Service was great, it took a little time, but we received an acceptable resolution. The tiles were easy to install with a rubber mallet. They also came apart easily if you needed to change something. They are durable, we have heavy gym equipment on them and have had no problems. We had to cut the tiles around the lally columns and for the final row along the wall and they cut easily with a jigsaw. We are very happy we found this product.