Choose the loaded size when registering a printer. Update that setting after changing rolls; the initial setup trusts your selection. Queued labels keep their original size. Templates are selected independently.
| Preset | Physical size | Raster | Resolution |
|---|---|---|---|
| brother-ql800-29x90 v1 | 29 × 89.8 mm | 306 × 991 dots | 300 dpi |
The 29 × 90 mm Brother stock uses a manufacturer-defined 89.8 mm feed dimension. Printable margins and feed orientation come from the same profile used by the adapter and renderer. Screen examples are not physical-size rulers.