Envirovent SILMV160/100T Silent 4" In-Line Duct Fans - Adjustable Run-on Timer

Presenting the worlds quietest in-line fan range in their class, the SILENT MV range creates a quantum leap forward in technology to improve the acoustic performance of up to 12 dB(A) compared with similar products on the market.\r\nThe SILENT MV range is the result of an intense R&D, technological and economic investment to ensure that you can be guaranteed a product range that provides exceptional performance with significant noise reduction.\r\nFollowing extensive aerodynamic testing, we have been able to not only reduce the amount of noise produced but also ensure that the noise level that is actually emitted is at a far lower frequency, providing a quiet and ambient environment.\r\nBy installing the SILENT MV, you will never experience the disturbance of noisy ventilation again.\r\nFeatures & Benefits:\r\n\r\n\r\nSound absorbent insulation\r\n\r\n\r\n\r\n\r\n360 rotating connection box\r\n\r\n\r\n\r\n\r\nSealed for life ball bearings\r\n\r\n\r\n\r\n\r\nFitted with a two-speed motor\r\n\r\n\r\n\r\n\r\nIP44 rated\r\n\r\n\r\n\r\n\r\nIncredibly silent running\r\n\r\n\r\n\r\nHigh performance\r\n