Frost King - Poly Foam - Caulk Saver For Gaps And Openings - Gray - 20 Ft.

Frost King's Caulk Saver 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. Its moisture-repellent and flexible nature allows to conform to uneven surfaces, making it ideal for both indoor and outdoor projects, enhancing insulation and energy efficiency.