M-D Building Products Backer Rod 71506

Md Building Products Caulk Backer Rod, Gray, 5/8″ x 20′

• Non-absorbent – closed-cell polyethylene pre-caulking material
• Use before caulking to fill gaps and openings larger than 1/2″ x 1/2″
• Prevents 3-point bonding
• Material: Plastic
• Color: Gray

Caulk Backer Rods for Gaps & Joints, size: 5/8″ x 20′, 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″. Prevents 3-point bonding.