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Note: U-value (0.60 – 1.2) indicates thermal transmittance of window. Smaller value equals better thermal insulation.
Inward opening windows are German style wooden or aluclad windows - most common type is tilt-and-turn opening
78 mm system:
Note: DK13 window can be either 2- or -3-glazed.
88 mm system:
Märkus: DK88 window is only 3-glazed.