Protect the safety of your employees from being at risk of nitrogen exposure by marking the area with the "Nitrogen" sign. Built from high-quality materials, this danger sign is a great choice for indoor and outdoor use as it holds out against harsh elements like weather conditions, corrosion, and more. It's also lightweight, durable, and inexpensive, giving you great value in the long run. Installing this safety sign only takes minues as it features a strong adhesive backing on adhesive vinyl signs and pre-drilled mounting holes and radius corners on aluminum, fiberglass, plastic signs. Danger sign Materials: aluminum, adhesive vinyl, plastic, fiberglass Aluminum: corrosion-proof and UV-resistant Adhesive Vinyl: weather, moisture, corrosion resistant Plastic: moisture, weather resistant Fiberglass: chemical-resistant, anti-scratch, non-conductor to electricity Pre-drilled mounting holes Radius corners Adhesive backing for adhesive vinyl Sizes: 3"x5" - 14"x20"