A team wants to use clear anodized aluminum louvers for ventilation of some A/V casework. I have not been able to find any designed for application in 3/4 inch doors, so would appreciate any sources anybody may have. What I have found uses perforated metal, but I think they’re interested in the louvered look.
Google “cabinet vents”
We used these products for ventilation at countertops - not sure if this is what you’re looking for or not. These references are out of date, but may get you started:
Hart and Cooley, LS series;
Titus, CT series;
Anemostat, AL series.