Abstract: A teller protection unit is herein disclosed. The teller protection unit includes a frame featuring an interlocking base. A bullet-resistant transparent element is resiliently mounted within the frame. The bullet-resistant transparent element is mounted in a spaced relationship from a portion of the frame. The bullet-resistant transparent element is composed of glass, plastic, acrylic or the like. The frame is adapted to be mounted in a wall. The spaced mounting relationship of the portion of the frame and the bullet-resistant transparent element is adapted to provide a passage for balanced transmission of sound between the bullet-resistant transparent element and the portion of the frame.