High-quality carbon steel door stopper security bar with industrial-grade forging process for durable strength. Upgrade U-shaped design with reinforced sturdy base, suitable for installation on exterior doors to help prevent or delay unauthorized entry. Specifically designed to fit 2x4 lumber. Industrial-grade coating provides long-lasting rust resistance for both indoor and outdoor use. Ideal for home, barn, shed, garage, gate, stable, and more. Quick and easy installation with simple drilling required. Each drop-open bar holder bracket includes tooling holes for convenient setup. Wide application for various in-swing or out-swing doors. Suitable for garage, basement, barn, shed, warehouse, backyard, and other locations. Size: 14 cm Material: Metal Color: Black Package Contents: 2 x Door Barricade Brackets Note: Light reflection and display differences may cause slight color variation between image and actual item. Measurement allowance is +/- 1-3 cm.