FROTH-PAK 210 Insulation Spray Foam Kit - DuPont FROTH-PAKs have been redesigned for optimal performance and sustainability. IMPROVED SUSTAINABILITY! Global Warming Potential (GWP) has been reduced by 99%, with no harmful, ozone-depleting HFCs. NEW PATENED NOZZLE! Our new patented nozzle technology improves mixing ration and reduces overspray. FASTER CURING! Our tack free/cure time is the fastest in the industry at 30 seconds. REGULATORY COMPLIANCE! This formulation is compliant in all contiguous 48 states. FROTH-PAK 210 Insulation Spray Foam is a Class A Fire Rated two-component, quick-cure polyurethane foam that fills cavities, penetrations, and cracks in rim joists, roof wall junctures and around pipes and ducts up to 2” thick. FROTH-PAK 210 Insulation is a chemically cured foam designed to significantly reduce curing time. It dispenses, expands, and becomes tack-free in seconds, saving pros time on the Jobsite.