Mount artwork to mats using these safe, hingeless strips. They are made from conservation quality, clear archival polyester bonded to a 2-ply mat with a self-adhesive backing strip. Simply position the print or photo in place and adhere the strips to the mat. Strips provide full length support allowing art to lay perfectly flat without adhesive coming in contact with it. This package contains 12 4 inch mounting strips. Acid free. Archival quality. Made in USA. 1 Pack of 12 Pieces