50 Pack Tyvek Window Sleeve with Flap - Waterproof Protective Cover for Home, Office & Construction - Perfect for Weatherproofing, Dust Protection & Temporary Window Sealing

These might look like paper sleeves, but they're actually made fron the incredible Tyvek®. Lighter, stronger, softer, brighter, and whiter than paper, Tyvek® resists water, mildew, tearing, stretching, and fraying. Even vinyl and polypropylene can't match its strength. All of our Tyvek® sleeves come with a fold-down flap and clear Mylar window to show the CD label. Measures 5" (W) x 4 7/8" (H) exclusive of flap.