These German made metal front window vents allow you the let fresh air in and thief's out. Fit and quality are excellent. coating is a textured coating - black in color. There is mesh screen inside the unit to prevent bugs getting throught he vents. These are used only while camping and are not to be left in place while driving (obscures vision). These slide into the window guide channels - you roll up the window and it locks into place. (Sold as a pair)