General description Silverline Garage Door Defender is a heavy-duty security device designed to protect most types of up-and-over garage doors. Made from solid steel with a corrosion-resistant, powder-coated finish, it ensures durability and long-lasting performance. Technical specifications Material: Solid steel Finish: Corrosion-resistant, powder-coated Size: 150mm Compatibility and accessories Compatible with standard disc padlocks Compatible with puck padlocks Other conventional padlocks can also be used (lock not included) Installation Base plate securely bolts to the floor No need to drill into the garage door