This stainless steel air damper is designed for use in drying cabinets and incubators, as well as RVs and yachts. Its sleek and Long-lasting construction ensures long-lasting performance, while the vent allows for precise airflow control. Ideal for maintaining optimal temperature and ventilation, it enhances the efficiency of your equipment. Features -Color:Silver -Material:Stainless steel -Size:12.50X12.50X1.00cm/4.91X4.91X0.39in -Inner diameter: 98 mm. - airflow control: the damper design allows precise control of airflow, enhancing the air your vehicle -Long-lasting stainless steel: made from stainless steel, this vent cover is wear-resistant and Long-lasting, suitable for harsh environments -Easy installation: designed for vents, it can be easily installed in rvs and boats, improving comfort in enclosed spaces -Effective airflow: provides efficient exhaust functionality, helping to maintain fresh indoor air by effectively removing stale air and smells -Stable temperature maintenance: helps maintain a stable internal temperature, making it suitable for longterm use Package list: 2 x ventilation equipment