Easy Installation: The U-shaped barricade bracket is equipped with pre-drilled holes and mounting screws for easy installation, suitable for indoor and outdoor use. Offer Protection: A U-shaped door barricade bracket can increase the security of your home, prevent intrusions, provide a safe and peaceful sleep for your family, suitable for door reinforcement or door barricades, providing additional protection for your door. Multi-scenario Application: Suitable for inward-opening doors, outward-opening doors, swinging doors, barn doors, sheds, garages, backyard doors, fence doors, basement doors, warehouses, etc. This heavy-duty door security bracket offers an adjustable opening from 3 to 7.5 inches and is suitable for 2x4, 4x4 and other sized timbers. This carbon steel U-shaped security bracket High quality is made of high quality heavy duty steel. Its 4mm thickness is 50% thicker than other brands, making it stronger and more durable. Industrial grade black powder coated to prevent rust and corrosion, suitable for indoor and outdoor use. These door security brackets include 2 adjustable U brackets, 14 self-tapping screws, 10 machine screws and an Allen wrench. (Wood not included) Note: The data are all manually measured, please allow 1-3cm error due to differences in light and display, there may be some color differences, please refer to the actual item received.