Has any Mumsnetter got one of the above? I have read manual and it I udefinitely says I should clean a ventilation grid every month. However, the one delivered to me a couple of days ago by John Lewis doesn't have one. We fitted the wall spacers but no grid. Our last fridge freezer had one and there appears to be an indentation along the back of the top between the wall spacers so wondering if it just hasn't been delivered. It would be very helpful if someone could advice me on this. Perhaps I should ring John Lewis on Monday in case it is sitting in their delivery lorry! Hope someone can enlighten me.