M-D Gray Polyethylene Caulk Backer Rod For Driveways and Sidewalks 20 ft. L X 5/8 in.
The MD Building Products 5/8 in. x 20 ft. Gray caulk backer rod for gaps and joints acts as a filler in large gaps before applying caulk. It insulates as well as cushions. Use in pavement cracks, wall joints and foundations. Backer rod is easily trimmed to size with scissors.
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