T.R.U. AF-20R Heat Shield Resistant Aluminum Foil Tape: 4 in. wide x 50 yds. (2Mil)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> 3.6 Mil Aluminum Foil: 1.6 mils (adhesive) + 2 mils (carrier) - 3 in. Core </span></li><li><span class="a-list-item"> Resist water vapor， some chemicals， flame， moisture， weather and smoke transmission. </span></li><li><span class="a-list-item"> Acts as a vapor barrier to insure the integrity of the insulation system </span></li><li><span class="a-list-item"> Thermal conductivity helps cooling and heating efficiency， improving efficiency in systems </span></li><li><span class="a-list-item"> Conformable backing and pressure sensitive rubber adhesive adheres to a variety of smooth or irregular surfaces </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31wIuxjpGqL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31ci0FBGheL.jpg" noproxy>