1+ Multi loudspeaker  
2+ Loudspeaker bracket  
3+ Flange head screw  
4+ Blanking patch  
5+ Hexagonal head flanged bolt  
6+ Captive nut  
7+ Loudspeaker bracket  
8+ Screw/washer  
9+ Flanged head screw  
10+ Screw/washer  

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.