NA-IS1-14 chromax.black Sx2 The NA-IS1-14 Sx2 is a set of two 5mm thick intake side spacer frames for Noctua 140x25mm 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-IS1-14 are compatible with all current square-frame Noctua 140x25mm 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-IS1-14 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. The chromax.black variant is a perfect match for black chromax or industrialPPC line fans. Specifications: Colour Black Fan compatibility NF-A14 PWM NF-A14 FLX NF-A14 ULN NF-A14 PWM chromax.black.swap NF-A14 industrialPPC-2000 NF-A14 industrialPPC-2000 PWM NF-A14 industrialPPC-2000 IP67 PWM NF-A14 industrialPPC-3000 PWM NF-A14 industrialPPC-24V-2000 SP IP67 PWM NF-A14 industrialPPC-24V-3000 SP IP67 PWM NF-A14 industrialPPC-24V-2000 Q100 IP67 PWM NF-A14 industrialPPC-24V-3000 Q100 IP67 PWM NF-P14s redux-1500 PWM (since 2018) NF-P14s redux-1200 PWM (since 2018) NF-P14s redux-1200 (since 2018) NF-P14s redux-900 (since 2018) Scope of delivery 2x NA-IS1-14 chromax.black inlet spacers for 140mm 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) Warranty 6 years