I think it is both
My door has the Top sliding /locking Modela Latch and it works fine
BUT
There are two small holes toward the top about 1.25" apart I think I found this on Google Images so that pull handle might be what I am after for the top
BUT
Reading the parts list and seeing 2 more tiny holes in the center of the jam it looks as though there may also be a 10lb Grabber latch like SouthCo makes
If I could see a pic of the OEM set up I can make it happen
In this pic I can just barely see the screws dead center on the right side
TIA