Phillips EDGEmaster® Wall (Dormer) Flashing is designed to prevent the entry of water into the wall. Wall flashing is typically found at interruptions in the wall, such as windows and points of structural support. This product works great to prevent top edge of window or door openings from water infiltration. Wall (Dormer) Flashing is available in regular (WF90 for 90° angles) and open angle (WF120). Available in a variety of sizes and colors (see color guide). Packaging is 10 pieces per bundle.