Ventilation Equipment and Systems – Commercial
The second half of the 20th century brought with it new realisations of the importance of air quality and the need for proper ventilation of working spaces. This elemental, 16″, 3 blade, panel wall fan, in knock-down form, for assembly on-the-job, equipped with automatic wall damper was a response to the growing market of the late 1950’s, Waugh and McKewen, London Ont., Supplier to the trade, 1957.
