Dana offers two sound absorbing heat shields – four/five-layer noise barrier shields and micro-perforated sound absorbing shields. Dana’s patented four- or five-layer noise, vibration, and harshness (NVH) shields are available in aluminum, Alclad™ or stainless steel, and constructed with two insulating layers featuring an exclusive dimpled acoustical core to provide a sound barrier for engine noises. These barrier shields offer good broadband noise reduction for many different shielding applications in demanding conditions.
Micro-perforated sound absorbing shields are also available, which can be tuned to absorb a specific range of frequencies. The micro-perforated layers, in conjunction with a special absorbing mat, are tuned to meet your noise reduction needs.