The Silverstone FM181 180 x 180 x 32mm Variable Speed High Performance Fan can be used to upgrade Silverstone cases as well as used outside the box for 180mm applications. Currently both Raven models utilize the 180mm fan size as well as the FT101. This fan is an upgrade that allows you to control the RPM manually via a rear PCI Slot Rheobus controller. A separate cable is included for fixed speed usage as well as a 4-pin adapter.

• High performance for positive pressure solution
• High air pressure and less noise with giant-bladed design
• 500rpm ~ 1300rpm speed range
• Shorting cable included for fixed speed operation

Model No.:	FM181 Adjustable
Color:	White
BEARING:	Two ball Bearing
RATED VOLTAGE:	12V DC
START VOLTAGE:	5 VDC(ON/OFF) at VR＝0Ω 11 VDC(ON/OFF) at VR＝50KΩ
OPERATING RANGE:	5V~13.2V DC
RATED CURRENT:	0.45 Amp
RATED POWER:	5.4W
SPEED:	1300 rpm +_ 200 rpm at VR＝0Ω ~ 500 rpm +_ 200 rpm at VR＝50KΩ
AIRFLOW:	65~150 CFM
STATIC PRESSURE:	Max 0.48~2.38mmH2O
NOISE LEVEL:	17dB(A) @ 500rpm 36 dB(A) @ 1300rpm
DIMENSION:	180mm(L) x 180mm(W) x 32mm(H)