The correct dimensions of Zeller-drawer element with the item number 13195 are 21cm depth, 18 (!) Cm wide, 86.5 cm high. I've even measured it, and it is also on a sticker manufacturer (Zeller Present Handels GmbH), the sticks on each drawer unit. It is interesting in this context that also have the wrong dimensions on the manufacturing side! (Just google times for "Zeller Present Handels GmbH" and there search for "13195".)
Unfortunately, two of mine ordered Drawer units therefore do not fit in the designated place, and I have to return again. Annoying.
Processing looks good, so I forgive nevertheless 4 stars. Maybe this review keeps someone like before frustration by the defective product description.