Custom made Biway Annexes
They are still used on older vans and also for permanent on-site vans.
Normally 12oz canvas roof and 10oz canvas walls in striped or plain
2.1m (7′) standout is normal but standout widths can go to 2.4m (8′) if needed and even out 3m (10′) on permanent sites with the addition of super heavy duty poles
Doors and windows can be added to suit your needs.