This Permacolor PermaTrans 41″x150′ Optically Clear Mounting Film is a thin, optically-clear polyester film coated on both sides with an optically-clear acrylic pressure sensitive adhesive. A clear polyester release liner that protects each side permits complete visual inspection of the product prior to removal of the 2nd liner. This optically clear, two-side coated film is designed for face- and back-mounting transparencies such as Duratrans or Ilfochrome to Plexiglas and other clear and translucent substrates.