Lineco See-Thru Mounting Strips 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 to hide the strip with borders as small as 1/8". Item No. L533-4015 Size: 4" 60 per Box.