Minneapolis Blower Door Fan Model 3 (23226) Check Availability

Model 3 3/4 HP  blower door fan for use in Minneapolis Blower Door Systems. Includes Range A and B rings.  In single fan mode, measurement range is up to 6,300 cfm in free air, 5,350 cfm at 50 pascal test pressure, and 4,950 cfm at 75 pascal test pressure . Minimum flow measurement is 300 cfm with Ring B. Accuracy is  +/- 3%. User can increase measurement range using dual or triple fans.