The ventilation fan installed at CMA 2.228A is:
I.A.C. Combination Silencer Ventilation System
Industrial Acoustics Company, Inc
341 Jackson Ave
New York 54, NY
Type: V.150
Serial: 2898
115 volt, single phase, 60 cycle
https://www.iac-acoustics.com/us/contact-us/
Reviewed 10/9/17 - Cox