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Enhance dock safety with our 10x14 inch "Notice To Truckers Open Rear Doors Before Backing Into Dock" caution sign, crafted from 0.040-inch aluminum. This corrosion-proof and UV-resistant sign is designed for durability, with pre-drilled holes and rounded corners for easy installation. Ideal for high-traffic loading docks, it prevents accidents. Sold individually, this sign is a reliable safety tool.