Seamless Replacement: This RV roof ventilation fan is designed to fit MaxxFan and MaxxFan Deluxe models (10A20281K1/10A20281K-1AF) and can be directly replaced without modification Suitable For: The vent cover is compatible with certain deluxe roof ventilators equipped with an electric lifting device High Precision Gear Structure: The RV vent cover features high-strength gears to ensure smooth operation, low noise, and wear resistance, ideal for long-term and frequent use Universal Interface: This RV roof vent fan integrates seamlessly into the RV power system for quick installation while maintaining safety and reliability Applicable Models: Ensure compatibility with various RV models including trailers, campers, caravans, and travel vehicles Specification: Material: Aluminum Alloy Size: 7.8 cm x 3.3 cm / 3.07 inches x 1.30 inches Package Includes: 1 x RV Vent Cover Note: Slight variations of 12 cm / 0.390.79 inches may occur due to manual measurement