412F/2H-038 Axial Fan, IP20, 12 V, DC, 40 mm, 10 mm, 5.3 cu.ft/min, 9 m³/h Best Seller. A range of ebm-papst compact fans aimed at the PC Cooling market.  This family of especially quiet cooling fans comes complete with connectors for connection to the motherboard and cover sizes from 40mm to 120mm.  They have been selected for their noise levels from <10dbA to 38Dba while still offering excellent cooling performance.