The 4" x 6" Recipe Box is also great for organizing flash cards. A great study tool for students!Store your most precious recipes in this recipe card box! Made of crystal clear acrylic with a hinged lid for easy access, this recipe box is designed to hold 4" x 6" index cards or smaller. Fits nicely on the counter top or in the cabinet, and includes free cards to get started! Works well in the office too for desktop filing!