I don't recall seeing it but there are hundreds on Temple and Webster.

I’m trying to find an entrance handle similar to below in polished brass with matching knocker. I can get this set from America but it’s satin brass and they don’t have matching knockers. Anyone know of suppliers that might be able to help? I’ve had no luck, can only find more rounded style.

If you are wanting the window the same size as the French doors, then a window manufacturer would do the whole job. Do you want aluminium or wooden windows? they will manufacture the window to fit space. Are your walls brick or timber studs? do you want a window which is smaller than French doors? These answers will determine whether you need a brickie a carpenter or just a window manufacturer.

There are always options but all have costs. Get several quotes asking what options you have.