Features: Multifunctionality: It can be used as both a heater and air conditioning outlet to meet the needs of different season. Rotating design: The round air vent can rotate, making it easy to adjust the wind direction and improve user comfort. Suitable for campers: Designed specifically for campers, easy to install, and perfectly integrated with the interior space of campers. Louver design: Provide a more natural and uniform distribution of wind power. Easy to clean: The design considers the convenience of cleaning, and the round air vent can be easily disassembled for cleaning. Specifications: Material:ABS Size:Approx.100mm/3.94''x29mm/1.14'' Hole size:77mm/3'' diameter Screw hole spacing:75mm/2.95''x75mm/2.95'' Package Includes: 1Piece Round Air Vent note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.