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How to count windows

Counting windows is also important for correct cost calculation. One window includes two sashes if they don't reach the floor. A window opening that extends from ceiling to floor counts as one window. If the apartment has balcony doors with glass panels, they also count as one window. With double frames (e.g., if double glazing is installed) each such window counts as two. In winter, window washing is only possible from the inside, and the service cost during this time of year is lower.

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How to count windows

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