You may not know what a rack card is but you have definitely seen it. When you wait in line to make payments for your purchases, you must have seen a stack of cards lined around the table. At hotels, it talks about destinations, local tourist spots, best museums, current concerts and events at the place, and many other things. Those are rack cards.
Door hanger are similar and are often left on your door. They can be as simple as a Do Not Disturb sign or they can advertise dry cleaning, maid, laundry and other similar services. These are often left on the doors of people by service companies offering home repair, cleaning, and lawn mowing or real estate agents. Both rack cards and door hanger are somewhere between a detailed brochure and a succinct business card. They offer just enough information to people when they are captivated. They come in sizes of 4×9, 4×11 or 3.5×8.5. Available in your choice of heavy 16pt card stock or lighter and more economical 10pt card stock.