Series 663 is the impact and blast version of our 660 single hung window. This window product is approved for use in High Velocity Hurricane Zone (HVHZ) as large missile impact resistant.
Thermal barrier in vent and frame enhances energy saving potential and improves U-Value performance
Weather-stripped sash and sill provides superior air and water performance
Continuous interlock meeting rails improve air infiltration resistance
Automatic sash locks available for increased convenience in operation
Anodized and painted finishes available - unlimited options to answer economic and aesthetic concerns
EFCO Corporation, is a leading manufacturer of architectural aluminum window, curtain wall, storefront and entrance systems for commercial architectural applications. Headquartered in Monett, Missouri, our mission is to be the most trusted supplier in commercial architecture. We seek to provide customers with the highest level of quality, innovation, value, and service.