4" x 100', Tite Seal Self-Adhesive Waterproof Flashing, For Doors & Windows, Saves Energy, Stop Your Heating & Cooling Dollars From Leaking Out Around Your Doors & New Windows, Keeps Out Drafts & Moisture, Eliminates Expensive Leaks Around Windows, Doors & Skylights, Can Also Be Used On Chimneys & Sheathing Panels.