The steps to installing an RV slide-out awning are to measure the depth and width of a fully extended sliding-out room. Buy the right size sliding awning kit. What you need to do is choose the design that best suits your RV. Always check the product you ordered before starting to install the RV slide. Check the number of holes in the awning kit and count the amount of hardware included. You can add holes on the left or right side of the center lanyard, applying sealant before securing the screws. Add rubber sealant to the holes before securing them with screws. Install awning pipes. Take the end cap extensions and connect them to the brackets without fixing them with screws. Carefully slide the awning tube into the awning rail. Secure the awning tube by tightening the shoulder screws on the end cap extensions.