The vertical drop in the hanging compartment is 41".
Often known as linen presses, when they have the drawer slides in the upper compartment. These pieces are ideal space savers when used as combined wardrobes / chests of drawers. Separating into three parts - cornice, upper cupboard and and lower chest they'll easily go up most stairways.
The internal depth of a wardrobe (from front to back) should be 18" (46cms.) if it is intended for everyday use.
Spare room wardrobes can have a reduced internal depth since the clothes can be hung at a slight angle.