DuPont Froth-Pak Series 12030015 Foam Sealant Kit, 16.8 lb

Froth-Pak foam sealant is a two component, quick cure polyurethane foam that fills cavities, penetrations and cracks. It provides a continuous barrier against air infiltration and helps seal out moisture, dust, pests and smoke. Primarily used to seal gaps less than 4 in wide.