Noiseblocker NB-Multiframe M8-S3 80mm x 25mm Ultra Silent Fan - 2200 RPM - 19 dBA The high tech multipart chassis has integrated vibration absorbers at each corner, making the fan supported directly by rubber. Even the fan's main framework uses anti-vibration glass-fiber reinforcement. The ultra quiet, fans are practically silent and TV confirms the listed decibel rating. The fan features overload protection, restart function, fail safe design - Noiseblocker is so confident they gave the fan a 6 year warranty. The near noiseless and extremely long-lived NB-NanoSLI bearing is the heart of the fan and will provide you years of service.