JR Products Narrow Vinyl Insert. Get your RV ready for the road with essentials like this Narrow Vinyl Insert, perfect for replacing worn or damaged screw coverings. Comes in an easy-to-work-with length. Narrow Vinyl Insert is constructed of the highest quality vinyl, which makes it very flexible for easier install. 3/4 inch wide. Order today! JR Products Narrow Vinyl Insert, 100 foot / Black