Material: Vent Cover is made of stainless steel material, wear resistant, strongImproved ventilation: Metal Vent Cover is designed to improve air ventilation. The louvered air outlet is heat-dissipating and breathable.Intensive grid: Air Vent Louver has an intensive grid the back to block external debris while allowing air to pass through.Easy to install: Grille Cover is easy to install and suitable for wall or ceiling installation.Applicable: Air Return Grille is suitable for home, bathroom, office, kitchen, garage, RV, house, etc. Specification: Material: Stainless Steel Size Chart: 15cmx15cm/5.91inchx5.91inch Package Includes: 1Air Vent Cover Note: Please allow slightly errors 1-2cm differences due to manual measurement.