10-YEAR WARRANTY: Invisible Grill is an advanced grill design system that provides security for your family, especially children, and it doesn’t affect the overall appearance of your home. It is made of high-quality stainless steel cable(316L GRADE), coated with a nano-technology membrane for extra protection against wear and tear. It is anti-rust, and anti-dust, and does not need regular maintenance. It is the modern, secure grill system for your family.