Thank you for your inquiry regarding this item from Prime-Line Products. When closing the drawer, the positive stop will prevent the box of the drawer from sliding further into the cabinet, preventing the face of the drawer from breaking and separating away from the drawer... this is achieved when the slides are installed correctly. The positive stop has un upper and lower fold at the rear of the slide to positively stop the wheels from by-passing the maximum distance of slide.
If the style is the same as those you are wanting to replace, these should work just fine. However, please note that on an RV these types of slides would require some type of drawer lock to prevent them from sliding in and out when the vehicle is in motion, or parked unleveled. These are ''free sliding'' drawer slides and glide very easily inward and outward.
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 email@example.com