Shelf with parallell shelves in the same width. (for example 123+123 cm wide)
If you have the same width on your shelves throughout the shelving system you shelf will not be affected when using the shelf extender. Your shelf will be 2 cm wider since two shelves are sharing one ladder.
PLEASE NOTE: It is always best to connect the shelves before mounting your shelf ladders on the wall. This way you’ll see the total width of the shelves and can adjust the ladders to fit perfect.