Tyvek HomeWrap - 3' x 165' - 1 Roll by DuPont Delivers the optimum balance of properties for superior performance against the elements prevent outside water from entering the walls and help to seal the home to keep outside air Backed by a 10-year limited warranty from DuPont reduce homeowner energy bill, homes stay cool in the summer and warm in the winter and dry all year Recommended for use with 2" Tyvek tape