For the $50 million renovation to the Zorinsky Federal Building in Omaha, Wausau Window and Wall Systems engineered and fabricated 49,305 square feet of blast-mitigating exterior curtain wall plus an additional 18,970 square feet of interior curtain wall for the building. The exterior utilizes Wausau’s SuperWall system and four-sided factory-glazed unitized system, both with 1.25'' protective glass. Wausau Window and Wall Systems, Wausau, Wis. www.wausauwindow.com