The Drywall Main Bar X 3600 Armstrong is a high-performance, pre-engineered drywall ceiling suspension system engineered to maximize job site productivity. This innovative grid solution allows contractors to install ceilings up to three times faster than traditional stud and channel framing methods, significantly reducing labor costs and project timelines. Built with premium features, this main bar includes the Peakform profile for increased strength and the Superlock main beam clip for a secure, audible connection. To ensure a seamless board application, the bar features knurled ridges that dramatically improve screw grab, alongside the Screwstop reverse hem to prevent screw spin-off.