I'm putting up an IKEA unit (well - that's sort of DIY init?0
The unit is along the lines of
The bottom and the sides will be against the skirting board but the top (middle) 3 units mount on a rail which, if I fasten directly to the wall, will leave the units indented by 3/4".
What's the best (and secure) way to ensure the front stays flush with the side and bottom units?