Great Stuff 99108860 Insulating Foam Sealant, Yellow, 12 oz

Great Stuff big gap filler insulating foam sealant is an expanding foam sealant that fills, seals and insulates gaps up to 3 in. This ready-to-use sealant is specially formulated to take on common areas of energy loss such as rim joists/sill plates, plumbing, HVAC and other larger penetrations.