18" Exterior H-Duty Convex Mirror with metal back. More than 100 Degree angle of vision. Ball & Swivel bolted to weatherproof back. Mirror has weatherproof metal frame. Complete with telescoping arm and mounting bracket. Manufactured with 100% Virgin Grade Acrylic, using the latest technologies. Mirrors have enhanced optical quality, superior reflectivity are free of defects and distortions and contain UV inhibitors to prevent sunlight discoloration. Manufactured under environmentally friendly processes. Sold as Each.