Climaloc CF12081 Foam Backer Rod, 3/8 in Dia, 30 ft L, Polyethylene, Gray

Climaloc Foam Backer Rod, 30 ft L, 3/8 in Dia, Polyethylene, Gray Features: - A backer rod of at least 1/8 in wider than the opening to be filled should be used - CFC-free