Store standard-sized index cards in this Staples 3 x 5-inch index card file. Protect index cards or other small items with this index card file. This durable plastic box features a snap-tight lid to keep your cards securely contained and prevent dust and debris from getting inside. Built-in notches in the box and lid hold cards in place so you can safely store and transport them. With a 300-card capacity, this Staples index card file is ideal for safeguarding and organizing important notes. Index card file keeps your index cards organized and neat. Designed for 3"H x 5"W index cards. Black index card file. Can hold up to 300 cards. Included lid is great for general storage of valuables and personal items.