Water heater pan mounts

[Guest zazothex]

I'm finishing up my new pans, and have a quick one: for the heater cutouts ('47 lcc: hot water), I see from what remains of my original floors that there are three screw holes and one for the water line. However, it looks as if there are also larger (4" or so) holes in the center of each side as if to allow the indents for the fan motors to poke through below & let the heater sit flush on the floor. I have a few pics of other peoples' pans (Thanks Tom Overfield), but don't see these big ones. The OEM pans were almost gone when I started, so I can't tell if I'm just reading rust wrong, or are there these larger ones as well?