USG DONN 4' Fire Rated Cross Tee (DX416) Designed to be part of USG's fast-install ceiling suspension system. Contents: 60 pcs. per box. Application: Typically they are placed 2' apart down the main tee, to create a 2' x 4' grid. Benefits: Easy to install. Quick release allows for easy tool-less removal. Audible click ensures proper connectivity. Fire-rated to ensure ceiling safety. Data Sheet