ACI Light blocking vent

This is a light blocking vent for AC Infinity grow tents.  This is a work in progress and I've been busy so I haven't had too much time update this further.  The airflow is not great but it works, my goal would be to update the slats in the vent to increase the air flow.  In my testing using  I would recommend using velcro all along the edge to reduce light bleeding in from the attached surface.  Verify the light blocking with a flash light and go around the edges to see ensure you do not have any light bleeding through.  There is a slot to slide in a 4mm thick piece of activated carbon if needed.