Box Gutter Expansion Joint
Our “stretch and seal” roof flashing system is ideal for square ducts, chimneys, skylights and more. It joint flashes hi-rib and standing-seam profiles and easily flashes between dissimilar materials with a superior fit and seal. Made with recycled material in the USA, it’s backed with a 20-year manufacturer’s warranty.
Learn about our other flashing products featuring Marco-proven performance.