FROTH-PAK™ Spray Foam Sealant 200 kit is the most popular size of heavy-duty sealant! Large openings that let air into a home rob homeowners of money, energy efficiency and comfort. DuPont™ Froth-Pak™ Foam Sealant is designed to fill gaps and penetrations greater than 2” quickly and affordably, helping eliminate unwanted airflow throughout a home. The new Froth-Pak™ Spray Foam has a GWP reduction of over 99% and contains no ozone depleting chemicals or HFCs while maintaining the performance attributes professional contractors expect.