An ATS Acoustics exclusive, this special line made especially for ATS by the best-known maker of acoustical fabrics, offers superior sound absorption and an affordable price. This same industry leader makes popular, high-quality fabrics used on acoustical panels in thousands of buildings around the world. The texture and colors give a quality and professional look to your acoustical projects. It's polyester, and meets ASTM E84 Class I or A standards. The weave on this fabric is open enough to let sound pass through and be absorbed, and tight enough to mask the appearance of the background behind it. We ship this fabric unfolded on a roll. Quantity 1 is 1 yard, 36x60 inches. If you order a quantity greater than 1, we will ship one piece 60 inches wide and as many yards long as the quantity you order (up to 40 yards).