X-Blaster -EN41713 / X-Static -EN41706 / X-Flow -EN41720         X-Blaster (The Heat Terminator) Dimension 80x80x25mm Bearing 2 Ball RPM 4000 rpm Air Flow 52.8 cfm Noise Level 45.6 dba X-Static (The Noise Killer) Dimension 80x80x25mm Bearing 2 Ball RPM 2000 rpm Air Flow 22.9 cfm Noise Level 21.8 dba X-Flow (The Storm Juggler) Dimension 80x80x25mm Bearing 2 Ball RPM 2000~3500 rpm Air Flow 22.9~41.1 cfm Noise Level 21.8~38.3 dba