Originally Posted by TG Twinkie
It does not fasten on the surface of the coach. It fastens to the door jam. Should not leak.
That is correct. As mentioned, we installed this on both the 19' Bambi with the "suicide" door and our 23FB. The lock was available in white, grey, and black.
I really like the extra security feature and it is certain that the door will not fly open when underway.
Also, you could have the main door propped open and the screen closed, turn the lock and it would prevent the screen door from being opened if you wanted to leave the door open in a campground but wanted a little more security form the screen door.
I did have to trim the mounting plate to fit the door jamb.