1587 Lineco See Thru Archival Corners 22mm pack 100

Crystal clear archival mounting corners allow safe mounting of photos, postcards or almost any paper item

They are made of archival polyester, pre-scored for speedy folding. The self-stick adhesive is 3M's 415, one of the few institutionally recognized adhesives. Corners are folded from the 22mm wide strips.

See also: 

1585 Lineco See-Thru Clear Mounting Strips