Chas I have a good source for plastic sheets here in Leeds but you may have similar suppliers down there. Do we really need to use what appear to be 2"wide slots hence expensive 2" webbing when I'm sure 1" webbing would be more than adequate and 1" slots less work to make? Of course for originality we could stick with 2"
Once I have sight of an original side screen and I will be able to calculate the price for a pair.