Henry 237 AcoustiGum, Acoustical Ceiling Tile Adhesive is a latex-based adhesive designed for installation of acoustical ceiling tile. It is also handy for installing wall paneling, drywall, particle board, moldings and FRP panels. This adhesive has a fast initial grab so a no sag product with easy cleanup make it a high quality easy to use product with professional results. A generous 30 minute working time which bonds to a variety of surfaces. Ideal for your DIY project or an experienced contractor. Sold as a 1 gallon.