The DONN SDX/SDXL ceiling suspension system offers maximum economy, simplicity and accessibility. Its hot-dipped, galvanized steel construction provides corrosion resistance and ensures paint adhesion. Working together with USG ceilings panels, they form the fastest-installing ceiling systems in the industry. Ceiling installation is easy with the patented quick-release cross tee clip. The clips are easy to remove without tools, minimizing tee damage. And an audible click when securing tee-to-tee connections ensures accuracy. The tight USG main tee splice yields sturdy, square ceilings.