GREAT STUFF™ Window and Door Insulating Foam Sealant is a specially formulated, minimally expanding foam with a low-pressure build that remains soft and flexible after curing. The foam can be formed without trimming to create long-lasting, airtight and water-resistant seal proven not to bow window or door frames when properly installed. GREAT STUFF Window and Door 12-oz Smart Dispenser Indoor/Outdoor Spray Foam Insulation | 99108862