[Bob Carriere]

Hi Jacek

The square tubes were meant for a steel rod that held the side curtains/canvas/windows. The canvass curtains would have a pocket for the approx. 10 mm rod would fit to keep the curtain verticaly rigid when the doors were open.

Curtains were not very effective in the rain/wind/snow. They will usually be seen on factory pictures or vehicles in parade. Early military training maneouvres rarely shows the curtain in use. They made getting in to and out of the cab more difficult and the design of rthe curtains greatly reduced visibility for the driver. In front line battle situations they were very conveniently lost....along with the engine cover, sometimes even the doors and the wooden toe board inside the cargo box would disappear.

They are made of a soft white zinc based pot metal that will melt very easily and also break easily.

Replacements are available from Mac Auto in Niaguara Falls NY USA. There were a common item on early 1930/35 Ford cars.

Cheers