This material can withstand temperatures up to 140°C and makes the fans even more robust and break-proof than Noctua's standard fibre-glass reinforced PBT fans. 140mm Noctua NF-A14 Industrial PPC PWM 3000RPM High Performance Fan.
Noctua NF-F12 Industrial PPC-3000 PWM - Boxed with Screws - Free Delivery UK
Noctua NF-F12 Industrial PPC 2000RPM PWM Fan, 120mm High Performance