Height – 2000mm + 100mm* bleed / Width – 850mm
*The bottom 100mm area must only be used for background colours/images or left blank. This section will be hidden and rolled into the unit mechanism. Your 2000mm tall design should bleed at least a third of the way into this area to allow for any height variance of the unit and prevent any white edge showing.
This gives the printer a small amount of space to account for movement of the paper and design inconsistencies.