One-component, low-expansion polyurethane foam specifically formulated tor use in the widest range of climates and temperatures on windows, doors, gaps and cracks. Exterior and interior uses. Formulated to air seal gaps around rough openings of windows and doors. Stops drafts and saves energy with a permanent, airtight, water-resistant bond to vinyl, wood and metal. Can also be used for wiring and plumbing penetrations, HVAC ductwork, basement and crawlspace drafts, sill plates, rim joists, attic hatches, and pest entry points.