JM Sound-SHIELD Formaldehyde-free batts are lightweight, sound-absorbent insulation made of long, resilient glass fibers bonded with a thermosetting resin. In floor/ceiling assemblies, sound control batts may also help reduce transmission of impact generated sounds between adjacent areas. Sound-SHIELD batts help provide a more comfortable interior environment by reducing transmission of conversations and the sounds of televisions, stereos and ventilation systems. Used in conjunction with the caulking of joints and resilient channels for drywall attachment, insulation can increase STC ratings by 8 to 10 points. The fiberglass batts are made to fit standard spacing and thickness of wood frame or steel stud construction in institutional, residential, commercial and industrial construction.