We do not sell 30×40. Our small-to-mid format is 30×42, two centimetres taller, and those two centimetres are the reason you cannot treat the two as the same thing. If you came here with a 30×40 frame already on the wall, the honest answer is that our print will not go in it.
Why 42 and not 40
30×42 is A3. A3 is exactly 29.7 × 42 cm, part of the international A series with its 1:1.414 ratio, and we round the width up to 30 on the product page. 30×40 is a separate convention with the ratio 1:1.333 — squarer, and not derived from anything. Both are common in Scandinavia, which is precisely why they get confused.
| 30×40 | Our 30×42 | |
|---|---|---|
| Width | 30 cm | 30 cm |
| Height | 40 cm | 42 cm |
| Ratio | 1:1.33 | 1:1.4 |
| Area | 1,200 cm² | 1,260 cm² |
| Matches A3 (29.7 × 42) | No | Yes |
What happens if you mix them
Two centimetres sounds like nothing until you try to close the frame.
| Combination | Result |
|---|---|
| Our 30×42 print in a 30×40 frame | 2 cm too tall — the sheet will not fit at all |
| A 30×40 print in our 30×42 frame | 2 cm of bare board: 1 cm top and bottom, or 2 cm at the bottom |
| A 21×30 print in a 30×40 frame | 9 cm across the width, 10 cm down — needs a cut mount |
The first row is the important one. It is not a cosmetic mismatch; the print physically does not go in. Trimming 2 cm off the bottom of an A3 sheet removes the print's own white margin and leaves the image running to the edge, which then sits under the frame's rebate and gets cropped again. Do not do it.
Black dandelion flower poster
Claude Monet flower painting poster
Claude Monet den japanske gangbro poster
Madame monet og hendes søn poster
Bauhaus rektangel kunst poster
1919 bauhaus poster #2
If you already own 30×40 frames
You have three routes, and only one of them involves us.
The first: buy the 30×42 frame along with the print. Our frames are built to the print, the sheet sits edge to edge, and the two centimetres stop being your problem. Oak and black are made in every size, and 30×42 is well inside the range where the coloured finishes are available too — white, dark brown, blue, green, red, yellow and pink all run up to 50×70. They are shown together in the frame range.
The second: keep the 30×40 frames for what already fits them and hang our 30×42 elsewhere in the room. Frames of different outer sizes sit together perfectly well as long as you align the centres rather than the top edges.
The third: have a framer cut a mount with a window sized to the print. We do not sell mounts in any size — no passepartout, no mount boards — so this is not something we can supply, though what a mount does and how the window is measured is worth reading before you order one.
Does the difference show on the wall?
Side by side, yes, slightly: 30×42 looks a touch more elongated, which is the 1:1.4 ratio doing its work and the reason it sits comfortably next to 50×70 and 100×140, which share it. On its own, nobody has ever noticed 2 cm from across a room. The difference matters at the moment of buying a frame, and almost nowhere else.
Every size we make, with exact figures, is in the size guide, and if you are deciding between 30×42 and going a step up, the prints that sell most in the larger 50×70 are in the bestsellers. Clean, geometric work is where the proportion reads most clearly — see the minimalist prints.