For windows with a depth of 2 inches 1/2 or more,
BLINDS ON SALE EXPRESS recommends opting for an inside installation.
Also, no matter the size of your window, its frame must be a minimum of 2 inches 1/2 deep. Otherwise, the housings of your blinds will not be properly recessed into your window.
To properly determine the dimensions of your window, you need to measure the width at the top of the inner window frame as accurately as possible (see illustration).
For an outside installation,
measure the exact width and height of your window frame outside.
If your patio door is double,
you need to measure the total width of your patio doors.
Then select a blind for each panel (one chain on the right, one chain on the left).
Be sure to measure twice to avoid any mistakes.
But if you’re still not sure about the right dimensions for your blinds, please don’t hesitate to contact our team.