NHT IWF Acoustic Foam Kit For In-Wall Speakers (Pair)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Makes ANY in-wall speaker sound better </span></li><li><span class="a-list-item"> Controls and damps wall resonance </span></li><li><span class="a-list-item"> Use in 2 x 4 walls only </span></li><li><span class="a-list-item"> One kit for tunes 2 in-wall speakers </span></li><li><span class="a-list-item"> Can be used with other in-wall brands </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41K9gIg3FbL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31gok9IpDiL.jpg" noproxy>