Description Reviews Q&A UNDER COWL SOUND BARRIER NOTE: Quantity refers to # of feet off the roll. For example: qty 1 = 1' x 54", qty 2 = 2' x 54", qty 3 = 3' x 54", etc. This sound dampening material is 1/2" thick and 54" wide off the roll and is sold by the running foot. Due to shipping size/weight regulations, we can only ship up to 22 feet per roll/box.
