1Fitment: Compatible for Heng's, for Elixir, for Ventline (pre?1995), and for Jensen(pre?1995 range hood) roof vents and range hoods or any 12 Volt motor with a 0.094 inch D shaped shaft. 2Improved Ventilation Performance: These replacement vent fan blades are designed to enhance the ventilation in your RV, eliminate moisture and odor in the bathroom or RV faster. 3ABS Material: Made with lightweight ABS material, these vent fan blades ensure long lasting durability and resistance to impact, making them ideal for RV and motorhome applications. 4Smooth Operation: RV exhaust fan blades are professionally manufactured and tested to ensure smoother operation and long term reliable use. 5Easy To Install: RV vent fan blades come with user friendly install procedures, which makes replacement quick and easy, without needing extra tools or professional help.