Our white bathroom extractor fan 100mm / 4" with a non-return valve is a reliable and efficient solution designed to improve air quality and prevent backdrafts in your bathroom. This extractor fan seamlessly blends into any bathroom decor, providing discreet and effective ventilation. The compact 100mm / 4" size ensures versatility in installation, fitting snugly into most bathroom spaces without compromising performance. This extractor fan prevents backdrafts, ensuring that air flows in one direction only. This feature helps maintain optimal ventilation efficiency and prevents unwanted drafts from entering your bathroom space. Installation is quick and hassle-free with our user-friendly instructions and included mounting hardware, allowing you to enjoy the benefits of enhanced ventilation in no time. Plus, with its whisper-quiet operation, you can relax and unwind in peace, without any disruptive noise to disturb your bathroom sanctuary.