FireKing File Cabinet, 1-Hour Fire Protection, 6-Drawer, Small Document Size, 31" Deep<br /> https://www.filing.com/FireKing-Card-Check-Note-Cabinet-6-Drawer-p/6-2552-c.htm

A modern index card catalog filing solution with locks and fireproofing offered by FireKing for $6,218.00 with shipment in 2-4 weeks. 6 Drawers with three sections each. Weighs 860 lbs.

at 0.0072" per average card, with filing space of 25 15/16" per section with 18 sections, this should hold 64,843 index cards.

https://www.youtube.com/watch?v=9wi6yKZRGAk

configurable interior drawers including card trays