Bar chart of U-factor (W/m²·K): slider, casement, and picture windows in double/triple pane vs a 2×6 insulated wall
Visual comparison of U-factor (lower is better) for common window types—slider, casement, picture—double and triple pane, plus a 2×6 insulated wall reference. Includes ENERGY STAR Canada Version 5.0 thresholds (minimum 1.22 W/m²·K; Most Efficient 1.05 W/m²·K). Created by Vinyl Window Pro for educational use.