Dymo 450 Turbo · Dymo 30334
How to print FNSKU labels on a Dymo LabelWriter 450 Turbo (Dymo 30334)
Set the paper size to 2.25 × 1.25 in (57 × 32 mm) in the Dymo LabelWriter 450 Turbo driver, print at Scale 100% with margins set to None, and use a PDF whose page is exactly one Dymo 30334 label. Prepline turns Amazon’s label PDF into that file in your browser, with the barcode rebuilt for the printer’s dots, and remembers your printer’s offset after one test label.
The settings
| Setting | Dymo LabelWriter 450 Turbo, Dymo 30334 |
|---|---|
| Paper size | 2.25 × 1.25 in (57 × 32 mm) |
| Scale | 100% (Actual size). Never “Fit to page”. |
| Margins | None |
| Orientation | Landscape |
| Headers and footers | Off |
| Media type | Set by the Dymo paper name |
| Print resolution | 300 dpi, direct thermal |
The 450 Turbo prints at 300 dpi, so FNSKU bars come out 3 dots wide on 30334 labels. Its head is 2.2 in wide, which is why 30334 (2.25 in) loses a hair at the very edge; Prepline keeps everything inside a 2 mm margin.
Set up the Dymo LabelWriter 450 Turbo once
- Add the paper size. Pick the Dymo paper name in the print dialog (for example “30334 Multi-Purpose”), not Letter.
- Teach it the label. No calibration step: Dymo finds the label by its notches.
- Make the PDF. Drop Seller Central’s label PDF into Prepline (any layout, including the 30-up sheet), pick Dymo LabelWriter 450 Turbo and Dymo 30334. Each label lands on its own page of exactly that size.
- Print one test label and scan it with your phone. If it’s off by a millimetre, measure the two gaps on Prepline’s test label once and it’s fixed for good.
When it goes wrong
The sides are cut off
The page is bigger than the label. Seller Central’s PDF is a Letter page (or a 2.625 in sheet label), and the printer crops whatever doesn’t fit. Use a PDF whose page is exactly Dymo 30334, print at Scale 100%, and keep the bars inside a 2 mm margin.
Two labels per sticker, or the label is tiny
The print dialog is shrinking a big page to fit, usually “Fit to page” or “Scale to fit”. Set Scale to 100% (Actual size) and choose Dymo 30334 as the paper size, not Letter.
A blank label between every label
The printer thinks the labels are longer than they are. No calibration step: Dymo finds the label by its notches. Also check that the paper height in the driver is the label height, not 6 in.
Everything is shifted a millimetre or two
Every printer feeds a little differently. Print Prepline’s test label (a frame 2 mm inside each edge), measure the left and top gaps, and Prepline moves all future labels by the difference. Saved for this printer.
The barcode won’t scan
Thin bars smeared by heat, or bars squeezed by scaling. Prepline draws every bar as whole printer dots (300 dpi), so check that Scale is 100%, lower the darkness one step if bars look fat, and scan the test label with a phone before the full run.
Questions
What paper size do I pick for Dymo 30334 labels on a Dymo LabelWriter 450 Turbo?
2.25 × 1.25 in (57 × 32 mm). Choose it in the print dialog (or add it in the printer driver first), with Scale 100% and margins None.
Is Dymo 30334 big enough for Amazon FNSKU labels?
Yes. Amazon accepts item labels from 1 × 2 in up to 2 × 3 in, and Dymo 30334 (57 × 32 mm) is inside that range.
Do I need special software for the Dymo LabelWriter 450 Turbo?
Only its normal driver. Prepline runs in the browser and gives you a PDF with the right page size, so any PDF viewer can print it.
Updated November 9, 2026