Avery 3381 Inkjet Postcards / Index Cards - 200 Blank Cards - 4 cards/sheet 4 1/4" x 5 1/2" Enjoy Easy to Use Templates for Optimal Customization Inkjet Compatible Matte White for High-quality Prints Card Dimensions are 4-1/4" x 5-1/2" 200 Total Cards per Package - 50 Sheets per Box