Snap-N-Store Snap N Store Collapsible Index Card File Box Holds 1,100 4 x 6 Cards, BlackDurable index card file is easy to assemble—just snap together and begin filing. Sturdy black fiberboard with a water-resistant laminate. Steel corners. Chrome label holder on front. Card Holder Type: Card File Box With Lift-Off Lid; Card Capacity: 1,000; For Card Size: 4" x 6"; Color(s): Black.