Reduces amount of caulk you need to fill or seal large openings. Works with virtually every type of caulk & sealant. Made of durable, resilient, moisture repellant poly foam. Just press in place, then caulk on top of it.
- 5/8″ x 20′
- Moisture repellent
- Saves expensive caulk while filling large gaps
- Also referred to as backer rod
