Amazon.com: FFB0412SHN-F00 40 x 40 x 28mm Cooling Fan, 24 CFM, 51.5 dBA, 13000 RPM, 0.60A, 3 pin Tach connector. Ship from USA !! : Electronics
Amazon.com: 36 Printer Fan Blower Fan 12V 40X40X20 Black Abs 4020 Dc 40 * 40 * 20Mm Turbo Fan Blower Cooling Fan for 3D Printer Accessories (24V) (12V) : Electronics