Seamless Replacement: This RV roof ventilation fan is designed to fit the MaxxFan and MaxxFan Deluxe models (10A20281K1/10A20281K-1AF) and can be easily replaced directly without any modification Suitable For:The vent cover applicable to some deluxe roof ventilators with electric lifting device High Precision Gear Structure:Vent cover for rvs with high strength gears are used to ensure smooth operation, low noise, and wear resistance, which is very suitable for long term and frequent use Universal Interface: This rv roof vent fan can be seamlessly integrated into the RV power system for quick installation while ensuring safety and reliability Applicable Models: Ensure that your vent fan parts operates efficiently on a variety of RV models, including trailers, campers, caravans and travel vehicles (please ensure the model is compatible) Specification: Material:Aluminum Alloy Size Chart: 7.8cmx3.3cm/3.07inchx1.30inch Package Includes: 1 RVs Vent Cover Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.