Wall Mount Aluminum Shelf Bracket Stand Rack for TV AV Accessories WiFi Router Componant Cable Set Top Box

I have a small receiver I wanted to use this mount for. The length stated 13.2, my receiver is 13. Well it does not fit because that is total length of mount not useable length. Also this mount is so flimsy i would worry with 5 or 8 lbs on it .Unless its a small switch or router do not get this.