Barred metal prison cell-block door opened, electronic buzzer sounds. Door closed with squeak
A large, barred metallic gate opened with slight keys rattling and then closed.
Long continuous buzz of electronic prison cell door release.
Metal prison gate closed with squeak, then opens with beep of electronic release.
Large prison door slam, reverberant
Large rolling metal prison door rolls to a close in a empty prison setting.
Metal prison cell door opened with squeak, then closed with small bang.
Metal prison door or gate beeped opened with creak.