Moistop Rigid CornerShield integrates into the wall system to create a seamless barrier around corners, the most vulnerable area of window installation. According to the company, the system is less costly than sill pans and more user-friendly than rigid pieces. Engineered to fit most windows, the system has the flexibility to conform to framing and is compatible with self-adhesive flashing and membrane products. Fortifiber Building Systems Group. www.fortifiber.com