Smart Dispenser Big Gap Filler

Great Stuff Smart Dispenser Big Gap Filler is an innovative expanding polyurethane foam designed to fill, seal, and insulate large gaps and openings around your home. Ideal for gaps up to 3 inches wide, it expands to create a durable, airtight, and water-resistant barrier that prevents drafts, moisture, and pest intrusion. Featuring Great Stuff’s patented Smart Dispenser technology, this can delivers smooth, precise control with reduced drips and mess, allowing for easy reuse up to 30 days after first use. Perfect for sealing around plumbing, wiring, HVAC penetrations, foundations, and attic spaces, it adheres to wood, metal, masonry, glass, and most plastics. Once cured, the foam provides excellent thermal insulation, sound dampening, and long-term durability against shrinking and cracking. It can be trimmed, sanded, painted, or stained for a seamless finish. Great Stuff Smart Dispenser Big Gap Filler helps homeowners and professionals save energy and maintain comfort year-round with professional-grade results.