Thanks for the photos and information. It's hard too see from the flat black BBQ paint
, but I'm trying to determine if there is any space or opening at the top of the vent. Our old rusted out one is the same as yours, with a sloped top, but I am not sure if the front plate is sealed at the top, has a thin slit/opening, has a half inch gap, or what. It is totally open at the bottom, and seemed to have been closed at the top, but that is where it was most rusty, so I can't tell if it ever had a space for air flow from the top. Would appreciate an idea from you.
Thanks, Lance (partner of Donna R)