The shades do not stay all the way down, they keep popping up about an inch. So, perhaps ordering 1/2 to 1 inch longer that what you need would be the way to go. One of the shades would not go back up at all. They sent me some tips to get it working and now the shade goes half way up. They did replace that shade without any further issue. All in all, they are fine for the price I paid. I am glad they will not be in a room that is occupied a lot.
Response from Blindster
Hello Lois, I apologize for the inconvenience on your order and thank you for doing the troubleshooting. I see that Our Customer service rep has the remake in the system for you and if you have any questions please let us know.