EE stated EE and 2 other employees were sitting an SCSR box on a shelf. The box became stuck and the EE was pulling the box while the other 2 employees were pushing. When the box freed up, it caught EE's right hand between the box and shelf. It caught EE's right middle, ring and pinky fingers. This resulted in a laceration/avulsion to the pinky finger that required 14 stitches.