These covers have been designed to not only cover the top and sides of the winch, but also to cover the rope hawse to stop water and road filth from entering the front.
Apart from protecting the winch from the weather, it also hides the rope which invariably these days is Dyneema Bowrope.
For those that have a low profile winch with the solenoids above the motor (i.e.: TDS-9.5c, an EP9 or similar), simply roll up a piece of sacking, or an old towel or something, to fill the space above the drum to level the top off. You could of course stow the winch hook on top of the tie rods and under the packing.
These superb covers are made from high quality black military spec Cordura heavy duty fabric fitted with webbing straps behind and underneath to secure it.