Delta 40x20mm 5vdc 12in 2wire Fan EFB0405VHD 2 Wire Connection EFB 40x40x20MM EFB0405VHD-F00 Spec Voltage - Rated 5VDC Size / Dimension Square - 40mm L x 40mm H, Width 20.00mm Air Flow 10.1 CFM (0.286m/min) Current Rating 0.320A