Dear Valued Customer, Thank you for choosing SUMERAIN products. We would like to take this opportunity to express our sincere gratitude for your recent purchase. We hope you are completely satisfied with your new product. Rest assured, we meticulously engineer all SUMERAIN products and put them through rigorous factory tests to ensure their prolonged, trouble-free use under normal conditions. Installing this product is as simple as it gets. All you need are some basic tools and our handy step-by-step illustrated guide. We wholeheartedly welcome any questions or feedback you may have. We eagerly anticipate the opportunity to assist you in the future. If you have any inquiries regarding this product, please do not hesitate to contact us at +1-866-203-0866 or email us at supports@sumerain.com. Once again, we extend our gratitude for selecting SUMERAIN products. We remain committed to providing exceptional customer service. Sincerely, SUMERAIN Customer Service Department.