What is this size suitable for?
You’re printing on “A3+ paper,” and the paper is to be inserted into the frame at exactly the same size as the picture glass. Or: You’re printing a smaller image format with a stylistically defined white border on a standard 329 x 483 mm sheet of paper—similar in design to using a mat.
What’s exciting about the “ Distance magnetic frame ”: Your image in 2:3 format has the best-selling print size of 30 x 45 cm and should have a very narrow, uniform trim margin of approximately 1.5 cm all around—meaning the paper/image is slightly and uniformly smaller than the frame size on all sides. With passepartout: In both portrait and landscape orientation, A3+ is suitable for various image aspect ratios, ranging from square to 3:2 to 2:1—centered, in the optical center, or positioned according to the golden ratio.
And here’s a handy tip from school: Hang an A3+ frame horizontally and place two loose DIN A4 sheets side by side in portrait orientation—this creates a small gap between the two DIN A4 sheets without them touching each other directly, as would happen with two DIN A4 sheets in an A3-sized frame.