The self-adhesive mounting corners are made from highquality 100% acid-free polypropylene; the solvent-free water based acrylic adhesive backing ever comes in contact with the artwork; they are ideal for mounting prints, photographs, documents and so on of different weight - light, moderate and heavy - depending on the size of the choosen corner. The items No. KVVV0030 - KVVV0031 - KVVV0033 enclose the whole corner of the artefact, while the other items give a minor visual impact as they hide only the edge of the corner of the artwork.