opening greenhouse window using aluminium glazing bars

[Jack_Sprat]

Hi,

has anyone here tried, or come across an example of, creating hinged opening greenhouse roof vents using 'on-rafter' aluminium glazing bars?
To make things a little more complicated, ideally, we're looking to make them bottom-hinged.

I've seen the prefabricated roof vent offerings from Howells and Ultraframe, but I'm primarily interested in a site-built solution.

I'll post up a drawing of where I'd got to thinking about this, presently.

 

thanks for reading - JS