Are you referring to the door latch?? Camping world sell one 6 Inch Plastic T Entry Door Holder - White 49608 It cost 7 dollars.... Hold the door at 180 degrees to the side of unit. that's is on my unit.
I redid the screws on mind, purchase stainless screws,dab a little caulk on them before putting them on also.
I believe they 1/2 inch
Ron I hate you everytime you show your unit in your garage (just kidding) btw, on your door thingy,,, I modified your ideal,,, I added a 6 inch spring to the rope, added a steel swivel clasp, with plunger hook clasp. When I drive we unhook the connection I have a small hook running along side the doorway to hook it on while driving... connect it to the door when we first go out the side door. Real easy off and on. This was a great ideal, it just does not matter how many times you try and remember to open the door and hold on YOU FORGET,, our brains are trained to open and push, let go... just hate it when the wind smacks the door into the side,,, I had a roadtrek and think I warped the door one time when the wind grabbed it..
David Sparks
2008 PC 2350
Houston, Texas