Why does Georgetown Door & Window recommend Norco? Because Norco takes care of the details. Heavy-duty, all-wood frames; reinforced corners and joints, strong, smoothly operating hardware; extra-heavy sash; energy-efficient double-pane glass and thick, tight sealing weather stripping. Georgetown Door & Window is ready to answer your questions, from installation to maintenance. Norco has been delivering wood and aluminum clad wood windows and patio doors for 80 years and building confidence. Product Style Aluminum Clad Wood Teton Clad Teton Wood Wood Awning Casement Window Double-Hung Window     Swinging and French Patio Doors     Geometric Sliding Patio Door     Norco Sash Pack Kit ( Replacement Window Kit)     Slide By Windows     Energy Efficiency: In Norco® windows and patio doors, energy efficient double panes of ¾" insulating glass are standard. LoE2 glass is available with or without argon, providing a highly efficient insulating barrier. LoE2 insulating glass reflects our use of the most advanced glazing techniques to reduce heat loss and conductivity. Intercept® warm-edge technology is standard, with the more flexible SuperSpacer® used on radius units. These advanced glazing techniques reduce heat loss and conductivity and deliver improved performance over traditional aluminum spacers Additional glazing options include Bronze/Gray Tint, Obscure, and Tempered glass.