upsimples 11x17 Picture Frame, Display Pictures 9x15 with Mat or 11 x 17 Without, Wall Hanging Poster Frames, Black, 1 Pack

Unfortunately the best prebuilt frame I found to hold both was this one which has them under the mat on 3 sides a little bit when placed vertically rather than side-by-side. I wish they made the standees a generic frame size like 8x10 or 10x10. I'll make my own frame at some point, but I've got too many projects in the shop already.