Introductions 4 u produces 9×12 postcards, and 6.25 X 9 postcards which offer discounts and savings on a variety of services and products. This is an opportunity for business owners to reach  1,000 or 5,000 homeowners, depending on your budget. Instead of just being tossed immediately,  these postcards are retained on the refrigerator or message board as they offer many savings on a variety of services and products.