it was custom made and tried to make the most of all the available space. For wardrobe storage you should usually allow 60cm depth. Place clothing hanger bar no higher than 190 - 200 cm and place a higher shelf 10cm above to store items of not so frequent use (this will be not so accessible without a step stool). On the lower end place shelves or drawers 140-150cm bellow the bar (so long dresses or coats can hang freely) and use the bottom 30-40cm for shoes (if placed on angel and not horizontally even better). Total width of walking closet will depend on available space and the need of actually getting dressed within such space. If so allow 120cm, but the more the better.