GreenGuard MAX Building Wrap is an air barrier material that acts as a secondary weather barrier that resists water that has penetrated exterior siding or cladding. Suitable for both residential and commercial applications, it has a breathable coating that allows moisture vapor to escape. It is available in various-sized rolls including, 9x100 ft., 9x150 ft., and 10x150 ft. Pactiv Corp. 888-828-2850.