I looked into the nana wall and several other options as well --- They are really cool, but in the end, we determined that our house location and set up didn't warrant the expense of these. Now, if we had an awesome view, we might have done this. My recollection of this in terms of pricing for Nana Wall and some of the other brands: I believe it was about $800 a foot for this --- so for a 12' opening, it worked out to about $9600 --- I looked at several manufacturers and the pricing was all in that ballpark. Will your doors open to a patio, a screened porch? This was a concern for us in this decision. We ended up putting a screened porch, so the Nana concept would have been great, because opening the doors wide would still be within the screen.... thus no bugs, etc invading the house. If not, you might want to consider with lights on in the house and the doors wide open, you might get every moth in town visiting! Another consideration is how to stack the panels. In our plan it was working out to be awkward --- and the "stack" would have been in the way. Just make sure that if you go with these, you have that planned carefully... some of them can stack inside a wall, which is pretty neat. Another consideration to think about..... look back at your pictures linked.... the transition from inside to outside.... if you are trying to make a very open space, be careful of that little half step transition.... it looks like a tripping hazard to me. I would want either a full step down, or preferably a level transition there to open up the space. The top picture has a small step, which can be an ankle breaker! Finally, if you are trying to maximize your view through the house straight out the back, maybe consider an odd number of doors so the exact center is glass, not the door frames meeting in the middle (your bottom picture does this glass in the middle way). If you think about your set of 4 doors concept, the dead center part will be about 8" of door frame, vs. glass. If you use 3 or 5 panels, the center view would be glass. This is why in the first few pictures they show the doors open, because it looks way better open than closed. But in the last picture, the view is great regardless. And.... while I think the standard is to have the center 2 panels open on french doors, it makes furniture placement more difficult, so just make sure you've thought about it! Good luck would love to see pics of the view, etc! Rachel

We had Window World windows installed on our entire house. We love them! I ran across this when I was searching for WW to contact them about installing a door. I had to comment. The windows look great. The installers were on time, professional, and did a wonderful job. Definitely not " drug addicts " mentioned in an earlier post. 10 years later and absolutely no problems. I do not work for WW, nor am I affiliated with them in any way other than being a satisfied customer. Why would you think that anyone who leaves a positive comment must be working for the company? Ridiculous. It seems that a few are going out of their way to discredit the company with a mouth full of sour grapes. Maybe they work for overpriced, horrible pushy salesmen, competitors

We have the lower sill on our Marvin slider. The wood floor butts up to it so it's not much more than 3/4" tall. I can see a wheelchair crossing it easily. Most of the standard sills are very tall, even for inswing doors. All to keep the weather out. I looked at the details for the Marvin Integrity inswing and the sill is 2" tall! You might try a Simpson door with a large glass light and see if you can get it with either a low threshold or no threshold and add your own.

It's the job of the sill to capture and redirect water to the exterior (water that makes it beyond weather stripping). Make sure the path of water is not blocked. You should see weep holes through the tracks and a path to the outside. You should be able to see the exit holes or path from the exterior also in the gap between the deck and window sill. . The raised interior lip is your last resort vs wind driven water entering the home.