Company Letterhead Paper Vector – Templates for letterheads may be difficult to make use of, but there are some tricks that can help make your job easier. Before we begin, let’s take a look at the different formats for letterheads. There are two basic types of format for letters, the single-line format, as well as the double line version. We will discuss the differences in the two forms before going to the basic notion behind letterhead templates. The letterheads you use for your business likely contain your company’s name, logo along with a description of the company’s mission, and even contact information.