M-D 71480 Backer Rod, 1/2 in Dia, 20 ft L, Polyethylene, Gray [SKU: ORG8105611]

Poly foam caulk saver acts as a filler in large gaps before applying caulk, Insulates and cushions, Fills large gaps and openings to prevent drafts, Twist multiple strands of cord together for extra-large gaps, easily trimmed to size with scissors, Non-absorbent, closed-cell polyethylene pre-caulking material, Use before caulking to fill gaps and openings larger than 1/2 in x 1/2 in, Prevents 3-point bonding, Provides a sound surface for caulking projects, Recommended for use in expansion joints in driveways and sidewalks. [QTY/UOM: 1EA / 1EA]