I was looking at the MArvin Clad ultimate glider window today. I am not sure about the latch from the outside and if it comes in that big a size with an opening big enough for your purpose. Might be worth a look, but its quite pricey. Also, would you just take the screen off? The screen does not slide. I think Marvin has casements where the screens slide and the windows swing out so you can fully turn them to wash them easily, but you would need clearance for the swing. Just some ideas. Good luck!

Here is a link that might be useful: Marvin Glider window

Do you mean inches or feet? That's some pass through at 7 feet. I would be interested in a long narrow window though. 6 to 10 inches high and 3 to 4 feet long? Something for under kitchen cabinets for access to the outside deck.

I doubt you're going to find any window that latches from both inside and out. That would defeat the purpose of a latch on what must be 99.9999999999% of windows sold...to keep someone on the outside from getting inside.

But, really, isn't it just a case of unlocking the window on the inside before you go outside? I would think many windows could be opened from the outside if they weren't latched, certainly the one slider I ever had could be.

But perhaps I misunderstand the problem?

If you really mean 7 feet by 6 feet, isn't that more like a sliding patio door?

I don't know how you can have it unlatch from both sides, though I suppose you could use door hardware.

I have a double sliding wood window in mine. Both sides move, and they both lift out easily (it's about 4' wide and less than 4' tall). After going through a lot of options, including French casements to match my front windows, I finally figured out that the double slider with the divided lights of the French casements, would work best. I had it custom made locally for the same price as many of the commercial offerings I'd looked at. Wood is probably less expensive than metal for custom work, however.

yes, feet not inches. although, I'm not opposed to having it be shorter, and adding a second long narrow (stationary) window above. I don't need it to Latch- as I could use another locking mechanism inside. but I do want to be able to open it from the outside without pre-opening it from the inside.

I suppose a patio door would work, except the handle would need to be at the bottom-

Oh. My wood double slider does that. :)

Plllog,
I'm not sure I understand your set up. Glass with wood frame? could you post a picture?

I was thinking I could just use a regular sliding window, put in stationary handles (inside and outside). and put a lock on the track.

How about a row of double hung windows? Each could open independently, and you could just put a handle on the outside too.

Goofy,

I'm more awake today and realized a lot of reasons why what I have wouldn't work for you. :) If you're having a continuous stone counter, you probably want the narrowest window possible. If you have a strong climate, you'll also want a thermal barrier rather than a single piece of stone, but probably still want the channel to be as small as possible. Which means a metal or nylon window frame, and I don't know what the pricing is for custom work on those. I still encourage you to ask! The trick is to ask at the high volume place where they serve a lot of big time construction. They have the sources.

This is my window. It's wood, with a wood frame, and the sill angles down a little. There is a counter (not a kitchen, just a serving counter) on the outside, also tiled, which is a tad lower than the kitchen counter. This is an unprotected (except by the guesthouse across the patio), Eastern exposure, so that worked best for all the variables I was juggling. As I said before, both halves slide, and both lift out easily to have it completely open. Before settling on this, I check out all kinds of windows, including pivot windows, bifolds, etc.

BTW, remember you'll be reaching across a counter to open and close the window. That's why the handle on my window is where it is. High enough to have the right kind of vector, low enough to reach. :)