Damplifier Pro™ is 38 percent thicker than our original Damplifier and the aluminum heat shield is 20 percent stronger. If you are looking to use one product and nothing else, you should look no further. Designed for professional street rodders and car audio competitors, Damplifier Pro™ is the most aggressive, most resilient thermal-acoustic vibration damper we offer. Door Pack - 12 sq feet, Trunk Pack - 20 sq feet, Bulk Pack - 36.50 sq feet, Shop Pack - 80 sq feet, 2 Shop Packs - 160 sq feet, CALL TO ORDER!!!! 1-800-716-9635