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M-D Gray Polyethylene Caulk Backer Rod For Gaps and Openings 20 ft. L X 3/8 in.
M-D Gray Polyethylene Caulk Backer Rod For Gaps and Openings 20 ft. L X 3/8 in.
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The 3/8 in. x 240 in. Backer Rod is ideal for filling gaps. The backer rod is recommended for use in filling large gaps and openings to prevent drafts. The backer rod also provides a sound surface for caulking projects.