This product is a 12oz. black straw foam with a theoretical yield of 780 FT. @ 3/8".  Polyurethane Foam Sealants are moisture cured sealants designed to completely fill and seal small gaps, cracks and voids.  Compared to standard cartridge type sealants, our sealants have excellent adhesion and expansion characteristics ensuring complete and permanent air tight seal.  Our sealants result in less waste on small jobs while having an economic impact on large jobs.  Our sealants are pakaged in pre-pressurized cans.  Straw foam products are applied with a one-piece applicator, which is included.  These lightweight cans are ideal for small projects.