Many fan size available:: 40*40*10/20mm,50*50*10/15mm,60*60*10/15/20/25mm,70*70?15mm,80*80*20/25mm, 92*92*25mm, 120*120*25/38mm Specifications: 1) Model:TFS12025 2) Dimension(mm):120*120*25mm 3) Voltage:12V，24V 4) Current :0.37A 5) Power:4.44W 6) Speed:2200RPM 7) AirFlow:72.64CFM 8) Pressure:3.45 9) Noise:39.2db 10)Weight:138g Insulation resistance: more than 10m ohm between housing and plus end wire red color at 500V DC. Dielectric strength: no damage can be found 600v AC.2 secretary, between housing and plus end of lead wire. Material: Frame: UL94V-0 70% P.B.T.+30% F.R.P Impeller:UL94V-0 70% P.B.T.+30% F.R.P Bearing: preclsion ball bearing system precision .Qilimpregnated sleeve bearing system Operating temperature:-10 to+70 centigrade Storage temperature:-40 to+70 centigrade Operating voltage: rated voltage+/-15%.