①.【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 ②.【Suitable For】:The vent cover applicable to some deluxe roof ventilators with electric lifting device ③.【High Precision Gear Structure】:Vent cover for rvs with gears are used to ensure smooth operation, low noise, and wear resistance, which is suitable for long term and frequent use ④.【Universal Interface】: This rv roof vent fan can be seamlessly integrated into the RV power system for quick installation while ensuring safety and reliability ⑤.【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) ⑥.Specification: ⑦.Material:Aluminum Alloy ⑧.Size Chart: ⑨.7.8cmx3.3cm/3.07inchx1.30inch ⑩.Package Includes: ⑪.1 RVs Vent Cover ⑫.Note: ⑬.Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.