3D number plates: what they are and what they cost
Plate Guides · 8 October 2026 · 4 min read
Domed, glossy letters that catch the light. A plain-English guide to 3D gel plates from the people who pour them.
What "3D" means
A 3D number plate has raised characters made from a clear polyurethane resin, usually called gel. The black letter is printed first, then the resin is laid over it so it domes up and catches the light. From a step back it looks like the letters are sitting proud of the plate.
Are they road legal?
Yes, when the letters are solid black, the font is Charles Wright, and the spacing and sizes follow BS AU 145e. Our are gel number plates legal post covers the details.
3D vs 4D vs printed
| Printed | 3D gel | 4D acrylic | |
|---|---|---|---|
| Look | Flat | Soft, glossy dome | Sharp, square edges |
| Depth | None | Around 1–2 mm | 3 mm or 5 mm |
| Price | Lowest | Middle | Highest |
For a deeper comparison read 3D gel vs 4D number plates.
How long they last
Good resin stays clear for years. Cheap gel goes cloudy or yellow in sunlight. Wash with plain water and a soft cloth and avoid jet-washing the edges at close range.
Fitting
Use sticky pads, not screws. Drilling through gel can crack the dome around the hole. See how to fit number plates.
Try one
Type your registration into the plate builder, pick 3D Gel and turn it around in the preview before you buy.