This product is either discontinued or we cannot get that from suppliers.
Noctua NF-A15-PWM 140mm, Fan Size 140x150x25 mm, Connector 4-pin PWM, Bearing SSO2, Rotational Speed (+/- 10%) 1200 RPM, Rotational Speed with L.N.A. (+/- 10%) 900 RPM, Airflow 67.9 CFM, Static Pressure 1.51 mm H2O, Voltage 12 V, MTBF > 150.000 h, Contents Low-Noise Adaptor (L.N.A.), 4-Pin Y-Cable, 30cm Extension Cable, 4 Vibration-Compensators, 4 Fan Screws.
The NF-A15 is a premium quality quiet 140mm fan with a round frame that complies with Noctua’s AAO (Advanced Acoustic Optimisation) standard. The NF-A15s frame features 120mm mounting holes (105mm spacing) and has been enlarged.