... flow: 38CFM,42.5CFM 4.rated speed: 2700~3050RPM ADDA AXB1231 ac fan blower general specification:Electric Strength: 1000VAC for 1 ... : high quality aluminum die-casting frame flatted with black paintADDA AXB1231 ac fan blower detailed specification:1. frame size(mm): 125X126X402 ... ,23mmAq7. maxiam noise: 55dBA, 57dBA8. safety approvals:UL,cUL ADDA AXB1231 Special Cooling Fan