SureSill provides a user-friendly flashing system for windows and doors referred to as the Most Advanced Solution against moisture intrusion and problems like rot, decay and ultimately mold. Our Sloped Sill Pan and Sloped Head Flashing easily integrate with each other and with most building enclosures. Our innovative Sloped Sill Pan ensures continuous support for doors and windows with positive slope to the exterior, and is known as the Best Practice Solution for Door and Window Installation. In fact, our Sloped Sill Pan is so effective that Energy Design Update, one of the leading national building science magazines calls it The Cadillac of Sill Pans. Material: Plastic.