fits awnings up to 25 long and y w straps which is known to the state of california to cause cancer and birth includes outside door and frame strikers and mounting screws snaps into existing screen slide tracks each segment is 33" or 43" long for a&e and dometic brands rubberized interior secures to the fabric and the clamps tighten to annog buddy awning door roller bell screen door grille adjusts from 20" to 32" to fit most rv screen doors mounts on the upper corner of your door to protect awning fabric against outside your rv