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Application Designed primarily
for ventilating manholes during repairs, these
units were equally applicable for tanks and vats. e Construction This was a self-contained, portable, gasoline engine driven fan for ventilation where electricity
was not available. A Briggs & Stratton Model A gas
engine was used. The entire unit was mounted on
a rigid base which rested on four coil-spring legs to
absorb vibration. e Performance Airflow
from 430 to 1550 CFM e e
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