The ceiling tile sizes are various from country to country. For example, in China, some ceiling tiles size is 595x595mm, it is metric size. While, some countries use British unit, 2×2, or 2×4, etc. For whole ceiling system purchasing, if buying both ceiling tile and matched ceiling profile at the same supplier, then it is perfect for installation. But, if a project only need to change ceiling tile, we have to confirm the specific size of ceiling tile is metric unit or British unit. If we have ordered ceiling profile in one supplier first, ceiling tile size would be determined by this ceiling profile. Confirming ceiling tile size is a very important thing for purchaser or importation department. Sometimes, it is very hard to confirm ceiling tile size, like concealed edge ceiling tiles, we would suggest our clients to send some product samples by express, in this way, it is better to confirm specific ceiling tile size than only confirming by pictures or drawings. For example, mineral fiber ceiling tile metric size are usually 595x595mm, 600x600mm, 600x1200mm, etc. British unit are usually 2×2, 2×4, 4×8, etc. In order to provide good product and service, we would appreciate our clients could help us in these details. Thank you so much for all support and hope we could make progress together. Chinese New Year is coming. We wish you happiness and prosperity in the year of OX. And hope the cooperation between us can be more closely. We hope sincerely we could get your support continuously in the new year. Happy Chinese OX year.