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I am very happy with my Quiet PC.

I am very happy with my Quiet PC. (27th March 2019 via Trustpilot)
AcoustiFan: DustPROOF 120mm fan
152 in stock
(18 customer ratings / 3 reviews)

Acousti AcoustiFan: DustPROOF 120mm fan

Acousti's DustPROOF fans feature a sealed motor that prevents dust ingress, keeping the fan quieter for longer.


  1. Virtually silent - designed to "BE QUIET AND STAY QUIET!"
  2. Sealed motor prevents noise due to dust damage
  3. Very high quality, extra-long life (over 6.5 yrs)
  4. Includes 3-speed fan cable
  5. 3 year manufacturer warranty
  6. Supplied with 4 FREE Ultra Soft Fan Mounts

AcoustiFan™ DustPROOF - Premium Quality Quiet 120mm Multi-Purpose Cooling Fan

The fan motor for the DustPROOF range of virtually silent fans is extremely quiet. The AcoustiFan™ DustPROOF series use the highest quality double-ball bearings available for reliability, use-anywhere inside a PC for extra long life expectancy (upgrade your PC and take these fans with you!). One of the unique features of these PC fans is that the motor has been completely sealed from the outside environment. This prevents dust entering the motor and also reduces the amount of noise perceived to be coming from the bearings within the motor.

Each DustPROOF™ quiet fan is also supplied with a unique 3-speed fan cable which offers maximum flexibility (3-pin or 4-pin Molex power connectors), along with the ability to select a fan speed suitable for your PC and noise sensitivity. The black connector will run your fan at full speed (12V), the blue connector will run the fan at medium speed (7.5V), and the white connector will run it at minimum speed (5V). However, if you opt for the white connector (minimum fan speed), be certain to design the airflow through your PC system carefully and monitor system and component temperatures. Acousti have even included four handy cable ties with each DustPROOF™ fan!

The DustPROOF™ quiet fans also incorporate an Auto Start safety feature. This feature is built into the fan's PCB and automatically restarts the fan after the release of any obstacle which has prevented the blades from spinning.

SpecificationsDustPROOF 120mm
Fan size (edge to edge)120 mm
ManufacturerAcousti Products
Air volume at full speed (12V), CFM ±10%56.3
Noise level at full speed (12V), dB(A)24.7
Fan speed at full speed (12V), RPM ±10%1500
Air volume at reduced speed (7.5V), CFM ±10%41.5
Noise level at reduced speed (7.5V), dB(A)15.6
Fan speed at reduced speed (7.5V), RPM ±10%1050
Power consumption, W1.56
Weight, g156
Approximate cable length, cm40
Ingress protection ratingIP55
Life expectancy @ 25°C continuous use6 years
Power connector3-pin, 4-pin
Bearing type2-Ball
Accessories3-Speed fan cable
Mounting hardware includedScrews
Fan depth25 mm
Rated voltage12 VDC
Warranty36 months
EAN barcode5060087740263

Customer Reviews



This fan turned my noisebox into a computer that I cannot notice whether it's turned on or not. Thank you so much!

Now I have to get GPU fans to avoid noise when gaming. Gelid Icy Vision Rev.2 seems like the way to go.

Extremely quiet


I bought 2 of these and they are extremely quiet inside my Zalman case. I now need a quieter CPU fan as that is the noisiest component now. These fans are sealed too so should not get noisier in a few years time. So far so good. I bought the rubber mounting gaskets for them too, just to be sure I got no case vibrations. Worth it in my opinion as easier to use than those rubber golf tee mounts. (Btw, my fans all suck air out of the case. Blowing air into my case made a strange noise due to the air oscillating through the grilles? Might need to mount fans a good distance from the case grille to prevent that?)



I have used quite a few of these and they are now my 120mm fans of choice. Very quiet and reliable. Worth paying that bit extra for quality fans.


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