A3 Size Frames

The size on the label describes what goes in, not what goes on the wall, and the difference comes down to how wide the moulding is. That catches people out when frames have to line up in a run or fit a fixed alcove, so measure the outside before committing to a set. If the content changes regularly, a snap frame opens from the front and saves lifting it down. See A3 snap frames, poster frames and A4 frames.