Use a protractor to obtain an correct angle measurement. Include an extra 2-3 inches for the width of every area to allow for your blinds to overlap and provide maximum protection.# ???? ??? ???? ???????? ?? ?? ??? ??? ????? ??? ?? ??? ?? ??? ????? ???? ?????? ??????_????? : ??? ?????? : ?? ?? ???? ??? ??? ?? ?? ??? ??? ?? ????? ???? ?? ?? ???? ??