Yes, the storm door protector chain can be used on an RV door.
Our apologies for the inconvenience this may have caused you. Kindly contact Prime-Line Products directly where a Customer Service Representative there will be happy to assist you in resolving this issue. For additional questions regarding this item, or any other product manufactured by Prime-Line Products, kindly call their toll free number at (877) 649-9740, or contact them by email at info@primeline.net
Thank you for your inquiry regarding this item from Prime-Line Products. Because this chain door stop installs at the top of the door, it may pose a problem as there is a bracket that must be attached to the top of the door with two 3/4 inch screws. It appears that the retractable screen rolls up and is concealed in the top header of the door, and if screws are going to be inserted there - there is a good chance you would be screwing right into the screen material and damaging your door. For additional questions regarding this item, or any other product manufactured by Prime-Line Products, please call their toll free number at (877) 649-9740, or contact them by email at info@primeline.net