Durable RV Roof Vent Cap: Includes 1 base and 1 cover, designed to protect your RV roof vent from external elements. Perfect Fit and Size: The base measures 5-1/4" in diameter and stands 3" tall when the top part is installed. Secure Mounting: Equipped with 6 screw holes at the base for easy and stable installation. No Screws Included: Screws are not provided with this set, allowing flexibility in choosing preferred fasteners. Reliable RV Accessory: Designed to ensure proper ventilation while protecting your RV interior. The NU-SET RV Roof Vent Cap is a reliable and durable accessory designed to protect your RV roof vent. This set includes 1 base and 1 cover, both crafted from high-quality materials to withstand harsh weather conditions. The base measures 5-1/4" in diameter and stands 3" tall when the top part is installed. It features 6 screw holes at the base for secure mounting, but please note that screws are not included. Perfect for maintaining proper ventilation and protecting your RV interior, all NU-SET products are proudly designed and assembled in the USA.