04-26-2014, 12:32 AM
I have got a question.
Many gates of old brick warehouses have been replaced with roller gates like the one shown on the photo. Since when are those modern gates available and a common choice to replace older gates? Are the early 1970th a valid assumption?
![[Image: Bildschirmfoto2014-04-26um082856_zps5d55a8c0.jpg]](http://i966.photobucket.com/albums/ae149/faraway52/Misc-1/Bildschirmfoto2014-04-26um082856_zps5d55a8c0.jpg)
This is one of many example from the West Bottoms in Kansas City Mo.
Many gates of old brick warehouses have been replaced with roller gates like the one shown on the photo. Since when are those modern gates available and a common choice to replace older gates? Are the early 1970th a valid assumption?
This is one of many example from the West Bottoms in Kansas City Mo.
Reinhard