This adjustable sliding door and window security bar is constructed from solid metal with an electrostatic coated surface that resists daily wear and maintains a neat, unmarked appearance over extended periods of regular use. It features non-slip rubber pads at both ends that create strong friction against contact surfaces, holding the bar firmly in place without leaving scratches or dents on door and window frames. The length can be adjusted smoothly between 17 in. and 50 in., with 13 pre-set adjustment holes and matching rubber feet to fit most standard sliding doors, patio glass doors, and horizontal windows of varying sizes. No extra tools are required for setup or removal, the whole process takes less than 2 minutes to complete, and the sturdy structure can absorb repeated external impacts to lower the risk of unauthorized entry, as well as prevent accidental falls of young children or pets near open windows. Color: White.