M-D Building Products 71480 1/2-Inch by 20-Feet Backer Rod, Gray

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Feature

The product is 1/2"x20' Caulk Back Rod
Easy to use
The product is manufactured in China
Fills large gaps and openings to prevent drafts
Provides a sound surface for caulking projects
Recommended for use in expansion joints in driveways and sidewalks
Twist multiple strands of cord together for extra large gaps
Easily trimmed to size with scissors

Description

Poly Foam Caulk Saver acts as a filler in large gaps before applying caulk. Insulates and cushions. Use in pavement cracks wall joints and foundations.