DigiFab exhaust blower
From Artisans Asylum Wiki
The DigiFab laser cutters and SLA printer(s) are exhausted by an exhaust blower in the ceiling duct work (just inside entrance).
The system consists of a 1 HP single phase variable-speed AC motor - model
Vari-GREEN P/N 356599 - the variable speed control is outside the exhaust duct - it's usually left on 100% speed. Control pot P/N 385806
The motor drives a pair of ~9" diameter x 10" wide squirrel-cage blowers