Size Name:3/8′ | Color:Grey Makes professional jointsthat last. Helps fill in and insulate large caulk joints and allows thecaulking to absorb more movement. Caulking adheres to the sides of the joint,but not to the filler rope, which allows the caulking to stretch and compresswithout tearing or pulling away thus extending the caulk’s life andeffectiveness. Made of closed cell poly foam. Minimum R value of 2. 5/inch.Color: Gray. Makes professional joints that last. This product is manufacturedin United States. This product meets customer requirement. From theManufacturer Sashco Pre-Caulking Filler Rope Backer Rod is a 3/8-Inch by100-foot soft cell backer rod with water-resistant skin.
