General Electric M90037 Insulating Foam Sealant  for Gaps and Cracks, 12-Ounce N/A Imported Expands to fill gaps and cracks smaller than 1 inch, creating a water-resistant barrier that insulates and reduces drafts Yields 25% more than other leading 12oz cans Repels water - helps prevent mold and rot Saves energy - reduces drafts Blocks rodents and insects