Window Coverings for french doors can be complicated. I am suggesting that you look at the Norman Window Fashions Portrait Honeycomb Shades in the SmartFit with DecoFlex option. This completely framed cellular shade allows you to have a fully operational shade that does not flop around when the door is moving. It is one more option that you should consider when covering a french door.
Other methods of adding window coverings for french doors would be standard cellular shades, but then you would either have to let them swing free at the bottom or put on hold-down clips at the bottom of the shade. Typically this last option would require you to bend down and release the clips every time you wanted to raise the shade to the fully open and stacked at the top position. You can also use any other type of shade, whether a roller shade, specialty shading (like a Silhouette shade or a Pirouette shade,) or a roman shade. They will all have to be clipped to the bottom of the door or you will let them hang free, which is some situations will cause them to bang around when the door is closed. Some people put shutters on doors, but I discourage this because of the stress incurred when the door is opened and closed. Shutters on french doors have a higher probability of sagging and louver damage than any other shutters in your home. Other people will put blinds on their french doors. There is not anything wrong with this choice or any other for window coverings on french doors, but blinds are heavy and they tend to slam into the door more than other choices.
Kempler Design is located in Reno NV and serves the northern Nevada and Lake Tahoe regions with a mobile design showroom. Paul Kempler, its founder is considered a window fashions expert. Kempler Design has been featured in many prestigious projects, including the HGTV dream home in Lake Tahoe. Kempler Design works with homeowners as well as interior design firms looking for a local contact in the Reno/Tahoe area or is available for travel to your area.