Quarter Dome Mirrors, 90 degree x 18". Designed for use in Corners. Perfect for Retail stores etc. Must be fastened to ceiling, (If ceiling can't be used for mounting, use a convex mirror instead). 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.