Hi 

I have a few questions 

we have units that are over 700mm wide and when we have adjustable shelves in them we put a line of holes on the back panel in the middle to help support the shelf at the back as well as the sides how do you do this in polyboard?

I am attaching a unit we have done in polyboard, the top part has the vertical panel and adjustable shelves are set back 200mm from the front of the unit again how do i do the regular drillings when the panel and shelves are not full depth?

also want to do a dishwasher top panel it is 568mm depth and 600mm wide how do i do this as a panel on its own?

Thanks Caroline