Lineco See-Thru Mounting Strips are made from conservation quality materials. Clear polyester is bonded to a 2 ply mat with a self-adhesive back. Simply position the artwork and adhere the strips to the mount board. No adhesive touches the art. Accommodates larger art and can be cut to smaller sizes for a particular job. See-Thru strips provide several advantages over corners; a few along the bottom provide full length support, application is easy, the art stays flat, and the strips are applied around the edges. The polyester may be trimmed to hide the strip with borders as small as 1/8".