Ace 5669981 Caulk Backer Rod 3/4 inch x 15 Feet Gray

weight: 15 feet | size: 3/4 inch

Ace 5669981 caulk backer rod in gray, sized 3/4 inch by 15 feet, fills gaps and openings before sealing. The foam rod supports caulk and weatherstrip around windows, doors, and joints, reducing wasted sealant and helping insulation sit tight. Cut to length with a knife and press into the gap, then apply caulk over the top.