SK Integrated louvres, Sheet steel, WHD: 210 x 100 x 8 mm, Integrated Louvers, Carbon steel, RAL 7035, Assembly components, 210 mm, 100 mm, 8 mm, 8.27 in, 3.94 in, 0.31 in, 73269098, 4 pc(s), 1.808 lbs, 4028177165267, For ventilation by convection, easily retro-fitted using 4 screws.