Features: Sufficient quantity for easy installation: You will receive 16 pcs 12 x 4 inches of air vent cover for home, the sufficient quantity can well meet your various use needs. There are screw holes on both sides of the white air vent register to facilitate your installation, the installation is very simple and convenient, more worry free to use. Energy saving and sturdy, widely applied: Our bulk AC register vent are made of quality steel and coated with a wear resistant and sturdy white coating that is not easy to peel, scratch, fade, and rust due to moisture or condensation. Our AC vent cover can improve air circulation efficiency, are sturdy, and are suitable for use in homes, offices, schools, etc. Basic information: Color: as pictures shown Dimensions: approx. 12 x 4 inches Material: steel Package includes: 16 x Air vent covers with matching screws Notes: Size may vary slightly due to manual measurement. Due to screen display, the color of the product may be slightly different from the picture.