Glad it will work for you.
ProFrog- I was stumped on where that thing went. I checked the trash heap and there it was. The exterior mounting ring broke off the hinge to the lid, so I tossed. If you could find another mounting ring , this one can be repaired. But chances are if you find a ring, there will probably be a good hatch connected to it.
Costs about $30 to ship one, let me know if this will help.