Handi-Foam Polyurethane he pre-pressurized, portable one-component foam system, applied in a bead form, expands and cures slowly over several hours to a semi rigid, closed cell foam upon reaction with moisture, such as ambient humidity. Apply Handi-Foam onto any clean surface to fill and seal around gaps, beneath base plates, mud sills, corner joints, t-joints, exterior cracks, around utility panels, pipes, penetrations, etc. It is specifically designed to be dispensed as a bead for filling cracks, crevices, and to fill smaller cavities on flat or irregular surfaces. Straw nozzle included. Sold in case of 12 cans.