I found two frames with windows that were supposed to be 4 by 6 inches but which, in reality, turned out to be 5.5 by 3.5 inches. So I cut a couple of pieces of my medium bond acid-free drawing paper to fit that opening with just a tad of overage. This is one of those. I have since put it in the frame and it looks rather nice. Original Jones Art in northwest Austin, Texas, is certainly framing himself a lot lately. Just so you know, I've had gel pen drawings framed since the early 2000's with no noticeable fading. It is a pigment-based ink rather than a dye like regular ink pens.