Class1 – 100% Cotton boards are made from the purest form of natural cellulose, require little processing, are naturally acid free and maintain a history of performance for maximum protection. Mostly used to frame original artwork, fine prints and precious documents by Museums. Only a limited variety of various shades of white available.
Class2 – 100% Conservation quality though technically speaking, they’re made from a chemically purified pulp, where all the potentially damaging substances have been removed. This means the acid neutral, pure white bevel remains white throughout the passage of time and won’t harm your artwork. Only a limited variety of various shades of white available.
Class3 – This non archival category has the widest range of colours and is the least expensive. These mounts, which include black core boards and boards with bold and brightly coloured face paper, are perfect for cost-effective framing when conservation quality materials are not necessary. They are acid free but will not maintain their Ph neutral quality forever.