- Heavy duty storage box featuring ergonomic handles that are angled to help reduce strain on wrist when lifting\n- Box features triple layers of board end panels and double to sides and base for maximum stacking strength\n- Reinforced handles and lock-in lid make box comfortable to carry\n- FastFold® automatic assembly\n- Compatible with A4 or folio transfer files, ring binders or lever arch files.\n- Security hole for optional use with cable ties (ties not included)\n- Made from FSC® certified 100% recycled board, 100% recyclable