A stiffener in an invisible grill is used to enhance its structural integrity and prevent sagging or bending over time. Since invisible grills are made of high-tensile stainless steel cables (often coated with nylon), stiffeners help maintain tension and stability. Uses of Stiffeners in Invisible Grills Prevent Sagging – Over time, the thin steel cables may lose tension. Stiffeners ensure they remain taut and aligned. Enhance Safety – By reinforcing the grill, stiffeners prevent accidental breaks or weak points. Maintain Aesthetic Appeal – They help keep the grill straight and aligned, preserving the sleek, modern look. Increase Durability – Reduces the impact of external forces like wind pressure or accidental pushing. Support for Larger Areas – For balconies, windows, or large openings, stiffeners provide additional support to prevent excessive movement. Types of Stiffeners Used Horizontal or Vertical Bars – Usually aluminum or steel, placed at intervals for added strength. Frame Reinforcements – Used along the edges of the grill for better support. Tensioning Mechanisms – Some systems include adjustable stiffeners that can be tightened over time. Would you like recommendations on stiffener placement for a specific installation?