1+ Duct  
2+ Footwell duct  
3+ Intermediate footwell duct  
4+ Push on fix  
5+ Final footwell duct  
6+ Captive nut  
7+ Self tapping screw  
8+ Face level air duct  
9+ Face level air duct  

The part numbers in the assembly image below relate to the product number in the table. Clicking on the part number will open up the relevant part details.