Love the colour (Farrow & Ball's French Gray No.18) but also the side windows to allow more light in.
Coniston Georgian French + 2 Side Lights - Softwood French Doors - Exterior French Doors -Doors & Windows - Wickes
http://www.housemaintenanceguide.com/residentialpatiodooroptions.php has some information on the types of patio doors that can be installed in the home.
Window to livingroom - Chambre d'hotes Bargemon by Donald Timmerman, via Flickr
French and Single Doors, Aluminium French Door, Gallery
I like these more contemporary, clean-lined French doors leading out into a gravel patio with stone.
Home at last
Gray and white London kitchen renovation, Remodelista
decor/ interior design
French door, white with the grey walls, very good contrast! For the back of the living room wall
Hedgehog Aluminium Systems - House & Garden, The List
Garage turned intio cotsge. Beadboard ceiling, and the roofline is just slanted…