This premium grade tissue is widely regarded as the "industry standard" for the permanent mounting of all types of flat artwork. It is especially popular among bespoke framers & photo processors due to its lay flat properties. Unimount Classic is a high grade adhesive on a porous, p H neutral tissue. Unimount Classic is suitable for mounting posters, prints, photographs, inkjets, pastels, charcoals, color copies, maps, charts, blue prints & plans. Unimount Classic is compatible with a wide variety of substrates, including mount board, pulp & gray boards, corrugated & foam centered boards, hardboard, MDF & of course, Hot Press's own specialist mounting substrate, White Display Board.