Window Blind Calculator
Calculate
Formula
Inside Mount: Width = Window Width − 0.25". Outside Mount: Width = Window Width + 6", Height = Window Height + 4".
Frequently Asked Questions
What is the difference between inside and outside mount?
Inside mount fits within the window frame for a clean look. Outside mount extends beyond the frame, covering more light and making windows appear larger.
How much overlap for outside mount blinds?
Add 3 inches on each side of the window width and 3-4 inches above the opening for proper coverage and light blocking.
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