To measure windows for inside mount blinds, measure the width of the window at the top, middle, and bottom. Use the smallest measurement for the width. For height, measure from the top of the window to the sill on both sides and the center. Again, use the smallest measurement to ensure the blinds fit inside the window frame without any gaps.

Measure inside mount blinds by taking the width and height of the window at multiple points and using the smallest measurement. This ensures the blinds fit snugly within the window frame, providing a clean look and effective light control.