I'm planning on building up the reveal to the glass with solid timber to give a frameless appearance, which would cover the trickle vents. They all open and have a lockable ventilation position thats 5mm at the bottom. Might end up with vents in the walls too.
Had a bit of a freak out researching trickle vents after you said that. I suspect that most problems arise from tightly closed windows though. I like an open window me.
I'm planning on building up the reveal to the glass with solid timber to give a frameless appearance, which would cover the trickle vents. They all open and have a lockable ventilation position thats 5mm at the bottom. Might end up with vents in the walls too.