I really, really like the magnetic door function (as opposed to needing to open the little sliding panel on my buddy's rig EVERY time I want to go in or out (to reach the latch).
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Okay, got a few pics. This is the stock setup on my 1999 Concourse. This is the magnet that's mounted on the edge of the screen door that "sticks it" to the coach body (so in other words this is in use when the main door is propped open but the screen door is closed and in use). There are other (round) magnets that magnetize the screen door to the main door. They are stronger than the magnet shown here, so that normally when you open the main door (say you are coming back to the rig) the screen door sticks to the main door and they open as a unit. But you can pull them apart and then if only the screen door is closed (main door is propped open), this magnet (pictured below) will hold the door closed to the coach body, so it functions as an independent screen door. So no latches are needed in day to day operation (but if you want to "lock" it very firmly, you can always use a stick - see avatar
In the third photo I included one of the round magnets that hold the screen door to the main door.
Also, as you can see, this magnet (the long equals sign one) certainly looks as though it's specifically made for the door (or the door is made for it), as it's recessed, plus fits around the door extrusions.
