We do. You can specify matting outter width and height, as well as window width and height when ordering matting by itself.
Currently we do not offer this as part of our framing services.
You can customize your frame's matting. Keep in mind that including matting with your framed print will automatically increase your frame size by a minimum of 3 inches. To adjust the size of your matting, simply adjust your frame's width and height and the matting will automatically adjust to match the frame size.
Yes it is. We use acid-free, lignin-free conservation matboard. Our leading frame supplier rates this matting as museum quality.