Minimum m² Rule and Pricing in Zebra Blinds

Pricing Fundamentals in Zebra and Roller Blinds

In the mechanical blinds sector, unit pricing for zebra blinds, roller blinds and double mechanism blinds is calculated as a general rule based on square meters (width x length) [1], [5].
This rule varies by vendor; it is not a standardized norm [1], [2].

Minimum Square Meter and Dimension Rounding Logic

Many vendors round up smaller dimensions: if length is under 2 m it is counted as 2 m, and with some vendors if width is under 1 m it is counted as 1 m [1], [2].
For example, when a zebra blind measuring 80x180 cm is ordered, the system invoices this product directly based on a minimum of 2 square meters [1], [2].

Correct Measurement Rules and Mechanism Allowances

The width entered in the order represents the measurement including the mechanism [4].
In roller and zebra blind mechanisms, the aluminum tube around which fabric is wound and side bracket feet occupy a specific physical space [4].
Due to this structural necessity, the cut fabric width is approximately 4 cm narrower than the outer headrail width of the blind owing to mechanism deductions [3], [4].
When this allowance is not accounted for, open gaps can remain at the edges of the window glazing, leading to light leakage [4].
To prevent light leakage and privacy loss in mechanical blinds, determining the headrail width by adding an overlap allowance of at least 10 centimeters from both sides of the window sash or frame is recommended [4].