This Ambar Classic A5 Folio File Folder Box, with an 80mm marbled spine, is designed for folio-sized file folders, which are more compact than A4. Sold unassembled for easy transport and storage before assembly, this box reinforces the protection of archived documents, keeping them free from dust and moisture. The marbled finish of the Classic line adds an elegant touch to office shelves. A practical solution from Ambar for those who organize folio-sized files with quality and durability.