This DESK MOUNT 30 slot (3 columns of 10 slots) heavy duty metal badge rack is designed for a HORIZONTAL (LANDSCAPE) credit card size badge. The ideal card size is 2 1/8" high x 3 3/4" wide. This rack is designed to see the top 1" of the card while it's in the slot. All of our racks feature a durable powder coat finish and are MADE ENTIRELY IN THE USA. The overall dimensions of this rack are 8" high x 13 1/2" wide x 10" deep.