12 inch x 300′ 6 mil black linear polyethylene sheeting, can be used for flashing for windows, doors & slabs, air/moisture barrier, concrete curing, landscaping & covers for storage, meets ps17-69, fha & military specifications, boxed.12 inch x 300′ 6 mil black linear polyethylene sheetingCan be used for flashing for windowsDoors & slabs