The 300 Series window is a fixed aluminum blast and ballistic window designed for interior applications, for secure areas or as a a transaction window. We take pride in the fact that these interior bullet resistant transaction windows and fixed bullet resiatant windows are built to withstand gunfire as well as forced entry attempts and explosions. This makes our bullet resiatant transaction windows a good choice for protecting people and assets in sensitive areas such as banks, schools and government buildings. The USAW 300TW window has been tested to standards and any further information should be requested from USBP.