IKEA Billy Top boxes (birch colour) to fit on top of standard 202cm bookcases. We've moved house and annoyingly our ceilings are now too low for the extra 35cm height. (Needs 2.4m ceiling or more.)
Two 80cm wide, one 60cm and one 40cm. One of the 80cm is a slightly later design - the other three use shelf tonks to hold the boxes in place.
Photo shows them all stacked to fit in one photo for comparison, but they are intended only be used singly. Or could be used as freestanding shelves. Message me if you need more details. Please take one or all.
Billy Bookcase topboxes (Kidlington OX5)
This offer has been gifted to someone and is no longer available.