Take a measure tape or ruler and a book. Stand against a door or wall, hold the book between your legs and guide it upwards. You can now determine the step height (stride length) when the vertical side of the book is against the wall and you measure from the floor to the upper top of the book (see illustration).
Enter this value here (in centimeters) and then click on “Calculate my frame height”.
* This is your ideal frame size, which does not necessarily have to be offered at BRENNABOR with exactly this frame size.