Introducing a 5mm offset, NA-IS1-12 12cm inlet spacers can reduce influx turbulences in suction type applications where fans draw air through perforated panels or other obstacles in close proximity
Simple but effective: In many situations, reducing influx turbulence can lead to significantly improved airflow performance as well as lower noise levels and more pleasant sound signatures
Ideal for PC case intake fans, pull fans on water cooling radiators or other situations where fans draw air through grills, perforated panels, punctuated sheets, mesh structures, filters, etc.
Compatible with all current Noctua 120x25mm fans such as the popular NF-A12x25, NF-F12, NF-P12 redux or NF-S12A series, not compatible with NF-A12x15 or fans from other manufacturers
Sx2 set includes two inlet spacers, 8x NA-AV3 anti-vibration mounts, 8x screws for case fan installation, 8x screws for radiators with M3 threads and 8x screws for radiators with UNC 6-32 threads
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Overview
Specs
Reviews
The NA-IS1-12 Sx2 is a set of two 5mm thick intake side spacer frames for Noctua 120x25mm fans that can help to improve both acoustics and performance in suction or pull type applications where the fan draws air through obstacles such as grills, perforated plates, mesh panels, filters or radiators. By offsetting the fan from the obstacle, the NA-IS1 inlet spacer reduces influx turbulences, which can, depending on the application and fan model, not only improve airflow but also significantly reduce overall noise levels and make the fan sound more pleasant to the ear.
Designed to replace the fans stock NA-AVP1 anti-vibration pads, the NA-IS1-12 are compatible with all current square-frame Noctua 120x25mm fans and extremely straightforward to install: For case fan applications, either the supplied self-tapping screws or the included NA-AV3 anti-vibration mounts can be used to sandwich the spacer between the fan and the case panel. For radiator mounting, both M3 and UNC 6-32 screws are supplied. In sum, the NA-IS1-12 Sx2 set is a simple yet highly effective fine-tuning measure for suction type applications where a reduction of influx turbulence can lead to improved airflow and acoustics. Caution: As influx turbulences vary between different fans models and setups (e. g. different fan speeds, grill shapes, mesh patterns, overall flow resistance, etc. ), it is not possible to reliably predict how much of an improvement adding inlet spacers will make. While the improvements are significant in most configurations, there sometimes may be little to no improvements and, in rare situations such as with particular slit-type grills, adding spacers may even lead to undesirable results with particular fan models. Please see our performance guidelines for further information.
The NA-IS1-12 Sx2 is a set of two 5mm thick intake side spacer frames for Noctua 120x25mm fans that can help to improve both acoustics and performance in suction or "pull" type applications where the fan draws air through obstacles such as grills, perforated plates, mesh panels, filters or radiators. By offsetting the fan from the obstacle, the NA-IS1 inlet spacer reduces influx turbulences, which can, depending on the application and fan model, not only improve airflow but also significantly reduce overall noise levels and make the fan sound more pleasant to the ear. Designed to replace the fan's stock NA-AVP1 anti-vibration pads, the NA-IS1-12 are compatible with all current square-frame Noctua 120x25mm fans and extremely straightforward to install. In sum, the NA-IS1-12 Sx2 set is a simple yet highly effective fine-tuning measure for suction type applications where a reduction of influx turbulence can lead to improved airflow and acoustics.
More airflow, less noise
Reducing influx turbulences doesn't only improve acoustics, it also helps fans to operate more efficiently from an airflow performance point of view. In many suction-type applications, using inlet spacers can therefore enable fans to achieve both higher flow rates and lower noise emissions.
Improving suction acoustics
Suction applications where fans draw air through obstacles such as grills or perforated panels are notoriously challenging acoustically due to the turbulences caused by these obstacles. Introducing a 5mm off-set between the fan and the obstacle, the NA-IS1 spacers can reduce these turbulences, which often improves noise levels and/or noise profiles significantly.
Compatible with all current Noctua 120x25mm fans
Replacing the fan's stock NA-AVP1 anti-vibration pads, the NA-IS1-12 are compatible with all current Noctua square-frame 120x25mm fans such as the popular NF-A12x25, NF-F12, NF-P12 redux or NF-S12A series. The slim NF-A12x15 or fans from other manufacturers are not supported.
Anti-vibration mounts and fan screws
For use with case intake fans, the NA-IS1-12 Sx2 contains eight long self-tapping fan screws and eight NA-AV3 silicone anti-vibration mounts for tool-free, vibration-proof installation. Both the screws and the anti-vibration mounts simply go through the holes in the spacer and attach to the fan, sandwiching the spacer between the fan and the case.
Scope of Delivery
2x NA-IS1-12 inlet spacers for 120mm fans
8x NA-AV3 anti-vibration mounts
8x NM-SFS4-BK long fan screws
8x NM-SFS5-BK radiator screws (M3)
8x NM-SFS6-BK radiator screws (UNC)
Please note:
As influx turbulences vary between different fans models and setups, it is not possible to reliably predict how much of an improvement adding inlet spacers will make. Please see our performance guidelines for further information.
