Soundbass Universal Bose Under TV Mounting Attachment, Black, Compatible With Soundbar 300/500/600/700/900 TV Speaker Soundtouch 300 Invisible Once Fitted, Finally, an easy way to mount your Sound bar - soundbass.co.uk
Bose SoundTouch 300 Wireless Sound Bar UK for sale online | eBay
Amazon.com: Soundtouch 10 Wall Mounting Kit for Bose Sound Touch 10, White, Complete with Mounting Accessories, Designed in The UK by Soundbass : Electronics
Bose SoundTouch 300 review: Bose takes on Sonos and (mostly) wins - CNET