LetterBox 2.0 Beta Download Install_LetterBox_20.exe - LetterBox 2.0 Beta (23.9 Mb) Read the following instructions to download and install the LetterBox 2.0 Beta. LetterBox 2.0 Beta Installation Instructions: 1. Download Install_LetterBox_20.exe by clicking here... Download Now 2. Run the file Install_LetterBox_20.exe file on you machine once the download is complete. 3. The installer will provide simple instructions to complete the installation. 5. LetterBox can be launched from the Windows Start menu.