Great Stuff Smart Dispenser Window & Door quickly and cleanly fills, seals and insulates around windows and doors and their rough openings. This minimal-expanding polyurethane foam with low-pressure build can help lower energy bills by forming a durable, airtight and water-resistant seal between a window or door frame and its rough opening. Comes with the new Smart Dispenser Straw for no drips, and less mess – foam stops where you stop. Reusable for up to 30 days – use again and again with precise, greater control.