Hinged refrigerator vent grill?

Thanks, looked, the only metal covers I could find still available had the larger radius corners which wouldn't cover existing cutout(dometic 3109350.011) All other links, square corner that would work, led to 404 or no longer available? Further searching might find one but not sure Id use since replacement if needed appears may be a problem, Cost wise about the same as modifying ours.

Ours is on slide and lower cover cant lay flat when swung down, (hits trim) which would be my preference but sooner or later would break.

Just ordered an SST continuous hinge, couple of thumb locks and a catch-see what I can cobble together.