In this video, I install an auto RV screen door closing device called the Screen Shot. The Lippert Screen Shot is designed to fit right-hand hinged Lippert screen doors. It consists of a spring and a cloth strap inside a plastic tube. At each end of the tube are plastic mounts specially designed to fit into grooves on a Lippert screen door frame.
Disclaimer: Love Your RV! received this Lippert product sample free of charge for review.
Unfortunately for me, our 2011 Couger trailer has a Challenger brand door not compatible with the Lippert Screen Shot. So, I ended up doing a modification to the Screen Shot plastic end pieces and drilled a couple of holes in the door frame to make it work.
Warning! My modification will likely void the warranty.