Pls see below explanation:

1.we can do any size as per customer’s request,but the problem is the container width is limit.So we have to remove the  gantry in order to fill the container.

2.If you need to work 2 doors together,we can make the machine size about 1800mmx2500mm(will adjust as per your door size).

3.there are different kinds of spindle style for your selection. pls see below pics for your ref.

spindle with two driller single-head-with-tool-changer-and-small-drilling-headtwo-separate-spindles