Sliding door and window limiter

The utility model discloses a sliding door and window limiter which comprises a positioner seat inner sleeve, a positioner fixing seat is sleeved on the outer wall of the positioner seat inner sleeve, and an anti-collision portion capable of wrapping the positioner fixing seat is arranged on the outer wall of the positioner seat inner sleeve. The two wings of the inverted-U-shaped plate can be opened like a fan shape, so that the angle of an opening of the inverted-U-shaped plate is enlarged, the opening angle of the inverted-U-shaped plate can be tightened by connecting the screw rod with the threaded hole in the iron sheet, window guide rails of more sizes and models can be clamped, the screw rod can move along the first sliding groove, and therefore the window guide rails can be clamped conveniently. According to the window limiting stopper, the screw rod for locking the window guide rail is used for adapting to the heights of different window guide rails, the main body of the window limiting stopper is ma