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3M Flexible Air Sealing Tape Ultra-Conformable 8045 tape easily stretches up to 370% vertically and horizontally to fit sills, curves and corners with a single piece without having to piece tape segments together. This avoids seams or joints. It is perfectly suited for sealing around windows, door installations and feedthroughs for wall penetrations and other complex shapes, including ducts, conduits, cables, pipes and chimneys. It is designed to work with both permeable and non-permeable wall systems. It has compatibility and primerless application with the most common building and construction substrates (PE, wood, OSB, concrete, etc.).