System and apparatus for operating prison cell doors

System and apparatus for operating prison cell doors prison door food slot Royalty free stock sound clip for personal, commercial, production use Prison Solitary, Quiet Presence, Metal Food Slot Unlock, Open and Close, prison door food slot I think the terms of art are more prosaic Tray slot or food slot or the like [edit: turns out there's a Judas hole for this I'

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bernstorff slot brunch A young man peeks out of his cell door food tray slot at the California Youth Authority's maximum-security unit in Stockton Photo by slot — is the metal opening in the prison cell door It allows staffers to pass food trays to inmates without having to open the door