Warn employees and passersby of the presence of explosives in the area by marking this "Explosives Keep Away" safety sign. Comes in four durable materials, this danger sign is great for indoor and outdoor use as it is able to bear up against harsh environmental elements such as weather and corrosive conditions. It also comes in different sizes to give you a safety sign that fits just what you need. Besides that, this safety sign gives you different yet easy ways to use it, depending on the material you choose. Do you want to mount or hang it? Go for aluminum, plastic, or fiberglass. But if you want to stick it on dry surfaces, choose adhesive vinyl. Danger sign Materials: aluminum, plastic, adhesive vinyl, fiberglass Aluminum: corrosion-proof and UV-resistant Plastic: moisture and weather-resistant Fiberglass: resistant to chemicals, weather, mold, mildew, stains Adhesive vinyl: weather, moisture, corrosion-resistant Indoor and outdoor use Pre-drilled mounting holes Radius corners Adhesive backing on adhesive vinyl Sizes: 3"x5" - 14"x20"