SK Integrated louvres, Sheet steel, WHD: 160 x 110 x 8 mm, Integrated Louvers, Carbon steel, RAL 7035, Assembly components, 160 mm, 110 mm, 8 mm, 6.3 in, 4.33 in, 0.31 in, 73269098, 4 pc(s), 1.658 lbs, 4028177165250, For ventilation by convection, easily retro-fitted using 4 screws.