SilenX IXP-13-14 Ixtrema Pro 40mm x 20mm 14dBA 6CFM Fan - Sleeved by SilenX
SilenX® IXTREMA™ Pro IXP-52-11 80mm x 15mm Silent fan 11dBA 18 cfm Rubber Mounts | eBay
Silenx 40x40x10mm 6000rpm 4cm Ixtrema Ixp-11-dvi 12v Cooling Fan For North/south Bridge Cpu Fan, Case Fan, Switch Fan - Laptop Cooling Pads - AliExpress
Amazon.com: SilenX EFX-12-15T Effizio 120x25mm <15dBA <74CFM Thermistor Computer Case Fan : Electronics