NZXT Aer F140 140mm Fan (Black) RF-AF140-B1 B&H Photo Video
NZXT AER RGB 2 - 140mm - RGB LED - Fluid Dynamic Bearing - PWM Fan for Hue 2 - Single - Newegg.com
NZXT FZ Air Flow Series 140mm Case Fan RF-FZ140-02-D
Nzxt 259438 Fan Hf-28140-bw Aer Rgb 2 140mm 22-33dba 500-1500+ -300rpm White 815671016812 | eBay
I swapped my two NZXT AER exhaust fans in my H500i with a Noctua NF-A12x15 120mm PWM (back) and a Noctua 140mm NF-A14 PWM (top). CPU is a few degrees cooler, but