If you have a pointer to the board or a data sheet I’ll have a look around (a google search for “fritzing part part-name/part-number/description” search term anything that works to identify the board, is where I always start. That said a google search for “16ch 12v relay board” without the fritzing part comes up with the SainSmart board (and a very few others that aren’t the same) so this part should work fine. If you have one of the others a pointer to a page with mechanical information (size of board, position of connectors) would be needed to make a new part.
Peter