Max Fill Straw Foam, Off WhiteDAP 12oz Max Fill Large Gap Foam Sealant w/ Reusable Bonus Straw - 12ct. DAP Max Fill straw foam is the original maximum expanding foam sealant formulated to fill gaps and voids all around the home. Max Fill provides three times the expansion to fill gaps greater than 1 inch wide. This gap filler foam has a weather resistant bond that seals out drafts and moisture. Sealing foam can be used indoors or outdoors, is paintable, and comes with a reusable adapter saving the can for multiple projects.Case Use for general purpose insulating and sealing. Cures in 4 hours.