Q:
Why can't I select top down bottom up with cordless option?A:
This is a great feature if you are looking for privacy, but wanting some view outside. The top down bottom up feature allows you to keep the bottom half of the window covered, while having the top half open, or vice versa. There are size limitations for this upgrade feature. It does vary product to product, the average minimum size is 19" and the maximum is 84".
If the checkbox does not allow you to select it, then the size you are requesting is out of specs. You can always call customer service to see if we are able to make the shade outside of what is listed on the website.
You can only select one lift mechanism. If you want cordless top down bottom up, you must select that upgrade feature. If you just select top down bottom up, you will get a corded top down bottom up. There would be a cord on the left and right side, one will move the shade from the bottom up and the other one will lower the shade from the top.