This product is a rv heater vent cover, which is made of durable plastic material, with good texture, safe and practical. Easy to install and use, it can be easily applied to your car heater. It is a very practical accessory that will meet your needs well. Features -Color:Black -Material:Heat resistant plastic -Size:11.00X11.00X6.00cm/4.32X4.32X2.36in Temperature resistance: 120 Celsius Installation hole: 42mm - The warm air vent outlet is suitable for 42mm warm air tubing, it is convenient for you to use. - 360 degree rotation design allows you to direct warm air to different angle. - A practical accessory to keep car air vent from scratch, dirt, bump, and etc. - No need for complicate tool, you can install this warm air vent easily. - Small and compact size, light in weight, you can carry and use it wherever you go. Package list: 6 heater air vent covers