Width and thickness guide
| Common size | Typical curtain height | Traffic |
|---|---|---|
| 200 × 2 mm | Often used below 3 m | Pedestrians and light trolleys |
| 300 × 2 or 3 mm | Often used from 3–5 m | Mixed and heavier traffic |
| 400 × 4 mm | Large or tall doorways | Heavy industrial use |
These are general guides rather than engineering limits. Wind exposure, temperature difference, traffic and desired overlap can change the most suitable specification.









