Air Duct Collection

Red Clone
A color photo of two ventilation pipes jutting out from the wall of a commercial building in downtown Portland, Oregon

Pipe and Stripes
A color photo of a commercial building in southeast Portland, Oregon

Hopper
A color photo of an industrial ventilation turbine on the roof of a commercial building in southeast Portland, Oregon

Vent on Roof
A color photo of an aging air vent on a stone restaurant in Madras, Oregon

Slice fan
Antique illustration of industrial fan

Disc fan of Blackman
Illustration of Disc fan of Blackman

Fan with electric drive

Wall mounted fan
Illustration of a Wall mounted fan

Large ventilator (weather machine)
Illustration of a Large ventilator (weather machine)

Digital Illustration of duct above cooker hood in domestic kitchen

Digital cross section illustration of ventilation system inside termite mound

Man partly inside air duct and dog sitting beside him

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