Odd size floor vent cover ?!

Opening from the baseboard to floor only measures 1 3/4” …. Anyone have any suggestions for a vent cover or know of any super narrow vent covers? So they make them without the neck part that goes into the opening?

Opening from the baseboard to floor only measures 1 3/4” …. Anyone have any suggestions for a vent cover or know of any super narrow vent covers? So they make them without the neck part that goes into the opening?