Dynaliner provides high acoustic absorption and excellent thermal insulation for roof, firewall, floor, quarter panels, doors and more. See chart for application recommendations. 1/8″ Contents: (1) 32″x 54″ x 1/8″ (813mm x 1372mm x 3.175mm) Dynaliner Sheet Total Coverage: 12 ft² (1.11 m²). 1/8″ thickness best for Under Trim (Doors) and Fiberglass Enclosures. 1/4″ and 1/2″ thickness best for Floor, Roof, Underhood, and Fiberglass Enclosures.