Seal gaps and openings effortlessly with this versatile polyethylene backer rod. Measuring 20 feet in length and 3/8 inches in diameter, it provides a reliable base for caulking by reducing the amount of caulk needed and ensuring a more effective seal. Ideal for both professional contractors and DIY enthusiasts, this gray backer rod is designed to fit snugly in cracks, offering superior insulation and preventing air and moisture infiltration.
