These plastic "peel & stick" type art-glass separators bond to the edge of the glass in a picture frame. They are used to make the proper airspace between the art and glass in either wood or metal picture frames.
Some small scraps and one piece that is 6 feet long.
Never used.
Spacers for Picture Frames (837 47th Avenue; SF)
Collection Times
Spacers are in Blue tube on porch----anytime
Spacers are in Blue tube on porch----anytime