Seal your home or commercial building with this Dow window and door foam that's easy to use. The Smart Dispenser eliminates drips during use for a clean application and gives you control for accuracy. GREAT STUFF window and door sealant is a water-resistant polyurethane foam that repels water to prevent moisture damage. Use it for as long as 30 days after first opening the container. It helps reduce energy loss and increase energy efficiency by closing the gaps between openings and framework. Minimize potential drafts with this airtight closure that blocks out air. The minimal expanding foam has a quick drying time of 5 to 15 minutes to speed up the process. After curing, the foam retains its flexibility to allow for expected growth and shrinkage. There is 12 oz of yellow foam in one canister. Install this foam to stop infestation from insects, damage from condensation and a collection of allergens.