Keep good air quality: Using our fan blades on your RV, can effectively exhaust lingering smells in the bathroom and built-up moisture, provide a healthy environment for you. Long lifespan: The fan blade made of durable plastic which can resist rust and corrosion, and all our blades had been tested before you got it, we care a lot about your device safety. Decide your rotation: The direction of spin is determined by looking down through the motor, at the top of the blade. Compatibility: The 6" fan blade fits for Heng's, Elixir, Ventline (pre-1995), and Jensen(pre-1995 range hood) roof vents and range hoods or any 12 Volt motor with a 0.094-inch D-shaped shaft. Please compare this unit measurements with your current exhaust fan motors to ensure exact fit. Dimension: Fan shade(6 overall diameter:2 x 1.5 individual blades; 1.75 diameter center bore plate; 2/25 diameter center D borehole);1-year replacement service RUSFOL 2 Pack 6 Replacement White Vent Fan Blades for RV Bathroom Vent Fan, fits for Heng's, Elixir, Ventline, and Jensen roof vents, and range hoods or any 12 Volt motor with a 0.094-inch D-shaped shaft Using our fan on your RV, can effectively exhaust lingering smells in the bathroom and built-up moisture, provide a healthy environment for you. Material Plastic Fan blade Compatibility The 6" fan blade fits for Heng's, Elixir, Ventline (pre-1995), and Jensen(pre-1995 range hood) roof vents and range hoods or any 12 Volt motor with a 0.094-inch D-shaped shaft. Please compare these unit measurements with your current exhaust fan motors to ensure exact fit. Product Dimension: Fan shade(6 overall diameter:2 x 1.5 individual blades; 1.75 diameter center bore plate; 2/25 diameter center D borehole); Package Included 2 X 6 fan shades Rotation: The direction of spin is determined by looking down through the motor, at the top of the blade. If you want to buy 2 motors together, or a set containing a fan blade and motor, we have other product choices, you can visit our store.