Frost King 3/8-IN X 20-FT CAULK SAVER C21H
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- Reduces the amount of caulk you need to fill or seal large openings
- Made of durable, resilient poly foam, it works with virtually every type of caulk and sealant
Caulk backer rods size ins.x 3/8 feet x 20 Poly foam caulk savers are used behind caulks to fill wide cracks and save on caulk.