Adjustable tension: This automatic door closer features an adjustable design, allowing you to freely adjust the closing force using the included adjustment lever, enhancing comfort and ease of use when closing the door.Zinc Alloy + Stainless Steel: The automatic door closer is constructed from high-quality zinc alloy and stainless steel. The one-piece design combined with a galvanized process provides rust resistance, corrosion resistance, and long-lasting durability.Quiet noise reduction: The automatic door closer uses nylon rollers that operate quietly and reduce noise during door closure. It minimizes impact damage when closing and helps prevent the door from being left open accidentally.Size: The automatic door closer measures approximately 6.5 x 4.9 x 1.2 inches and is suitable for doors weighing 2040 kg with a maximum width of 1000 mm. The spring door closer is designed for both left and right-handed doors, making it ideal for use in homes, hotels, offices, and dormitories.