Take a look at our projects page to see drop ceiling tiles installed in a T-Grid ceiling system. Our photos show a typical application where office space has been set up in an existing warehouse with a sprinkler system already installed. The EPS drop in ceiling tiles are used instead of regular fiberboard tiles as they will ‘meltaway’ in the heat of the fire allowing the sprinkler system to operate. This is required by code when the ceiling is located below the sprinkler heads. See the illustration of dropped ceiling tiles here. https://www.universalconstructionfoam.com/categories/eps-sheets/