A5 A4 A3 A2 Mounting Craft Board Backing Picture Photo Mount Card Sheets 1mm 2mm

A5 148mm x 210mm (5.8" x 8.3"). A2 420mm x 594mm (16.5" x 23.4"). A3 297mm x 420mm (11.7" x 16.5"). A4 210mm x 297mm (8.3" x 11.7"). 2mm thick board (2000 microns). HIGH QUALITY TWO SIDED BEER MAT BOARD CARDS.