Backer Rod- Foam- 5/8" x 20'

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M-D 71506 Backer Rod, 20 ft L, 5/8 in Dia, Polyethylene PRODUCT OVERVIEW Non-absorbent, closed-cell polyethylene pre-caulking material helps repel moisture. Use before caulking to fill gaps and openings larger than 1/2 x 1/2 in. Prevents 3-point bonding.

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