Aluminum Wall/Door Grille BK-WDG Description: 1.All-aluminum construction 2.For wall or door application, as well in Transoms or Dark Room application. 3.Horizontal blades are fixed at 45 degrees for airflow. 4.Finish: White or Plat Black mill finish or anodized finish. 5.Size in picture is 12"*8" inch. Size and color according to customer"s requirement. 6. Available dimensions (H x W): A) 6 x 6" B) 8 x 4", 8 x 8" C) 10 x 4", 10 x 6", 10 x 10" D) 12 x 6", 12 x 8", 12 x 12" E) 14 x 14"