When certain areas go under construction, use the "Area Under Construction" sign by Gorvex to warn and alert passersby of the danger ahead. Available in four durable materials, this danger sign is best used indoors and outdoors as they will not be destroyed and fade easily. Moreover, this safety sign is able to withstand harsh environmental elements such as UV rays, moisture, and corrosion, so you're sure that this will last long. Additionally, this safety sign has pre-drilled mounting holes and rounded corner for easy installation. Danger sign Materials: aluminum, plastic, fiberglass, adhesive vinyl 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 for adhesive vinyl Sizes: 3"x5" - 14"x20"