Frost King 1/2 in. x 250 ft. Grey Poly Foam Caulk Saver Contractor Pack

The Frost King 1/2 in. x 250 ft. Bulk Pack Poly Foam Caulk Saver is designed to reduce the amount of caulk that you need to fill or seal large cracks or openings. It works with most types of caulk and sealants. It can be used on driveways, either concrete or asphalt, and around windows and doors.