Cover LettersCover letters should be included with your direct mail brochures. They can also be sent separately as stand-alone letters. A professionally written cover letter properly introduces your company to your perspective customers. These cover letters are written on behalf of RESIDENTIAL and COMMERCIAL electronic and security integrators. They are designed for companies within AND outside North America. ![]() Learn More, Pricing, Order Online: Homeowner | Commercial | Builder | Architect / Interior Designer Contact us to discuss your personal needs, +1.949.363.5340. |