You are NOT buying a HiFi or Wall Bracket. You are buying the VERTICAL wall plate for BeoSound 9000 Wall Bracket as shown in the image (the small plate), this item is manufactured by STBbrackets. We are the manufacturer. 

This VERTICAL wall plate is compatible with the original Bang & Olufsen wall bracket and the wall bracket manufactured by STB brackets. You have lost your wall plate and so can't mount your wall bracket. 

We have added a centre marker to the wall plate which was never included on the original B&O plate.  This allows you to accurately mount BeoSound 9000. 

Please note: you should have the large aluminium plate which is attached to the rear of BeoSound 9000. If you have lost the screws to mount the plate to the HiFi, these are available seperately from STBbrackets.