The DONN SDX/SDXL Ceiling Suspension System offers maximum economy, simplicity and accessibility. It's hot-dipped, galvanized steel construction provides corrosion resistance and ensures paint adhesion. Both the commercial remodeler and the do-it-yourselfer will find ceiling installation 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.