This frame has one window and a door in it. the space you see where the red magnets are is 990mm 600mm for one of the windows in the seating area. The method i have adopted is to build the frames in place on the truck by tacking them together and then dropping them to the ground to finally weld and grind the welds.flat. This way i can manage the frames on my own. they are not light but its just doable.
