Applications : There are many applications for acoustic enclosures and acoustical enclosures. For example, products are often used for sound dampening with manufacturing equipment, power generation devices, air conditioning systems, and refrigeration equipment. Acoustic enclosures are also used for noise attenuation with compressors, blowers and fans. Some acoustic enclosures are portable and light-weight. Others are designed to be fixed in one place. Typically, these permanent structures contain acoustic ceiling tile, acoustic wall tile, and acoustic foam. Personnel shelters, observation rooms, and control rooms are examples of larger structures.