Tough self-adhesive PE film specifically designed to be applied at the time of fabrication over the openings of ductwork systems. Film protects uninstalled HVAC duct during storage and shipping from dirt, dust, moisture, insects, and other contaminants that can lead to poor air quality. Specially formulated adhesive system will adhere to the duct during transport and will not leave residue once removed. Film is strong and puncture resistant.