Key Concerns About Horizontal Invisible Grilles Child Safety Risk: Horizontal grilles can act like push-up bars. Children may hang or swing on them, leading to loosening over time. A serious hazard is the possibility of a child’s head getting stuck between wires, causing suffocation. Wear and Tear: Metal wires expand and contract with heat (especially west-facing windows exposed to afternoon sun). Over years, this weakens the grille and increases risk. Design Issues: Longer horizontal spans f