The 1990/2090 series narrow stile cross bar exit devices provide safe and reliable egress that is ideal for aluminum doors. The 1990 series concealed vertical rod is designed for double door applications, while the 2090 series rim device is designed for single door applications. Both series boast a 10-year limited warranty. The 1990/2090 series are suitable for retrofit applications with interior and exterior doors in commercial and retail installations. Features include standard hex dogging and concealed mounting screws to prevent tampering. Aluminum cross bar and narrow stile center case to fit small stile aluminum doors. Ideal for retrofit commercial and retail applications requiring a durable crossbar solution.