The Fan Sound Noise Reduction Earplugs NC02 are designed to effectively reduce noise from fan sounds. With dimensions of 15 x 15 x 18mm, these earplugs come factory sealed for hygiene and quality assurance. Ideal for use in industrial settings, facility maintenance, and personal protective equipment (PPE) situations where noise reduction is necessary, these earplugs offer a comfortable and reliable solution for protecting your ears from loud fan noises.