This is the replacement blower assembly for Lincoln's Viking PAPR systems. This comes with the filter cover assembly (filters sold separately). Quick Specs • Size: 8" x 7.5" x 3" • Weight: 2.20 lbs • Air Flow: Low: 180 LPM (6 CFM) | High: 210 LPM (7.4 CFM) • Operating Temp: 23 - 131 Fahrenheit (-5 - 55 Celsius) • Approval: NIOSH 42 CFR 84 • Assigned Protection Factor: 25 • Alarms: Audible | Vibrate