The Rheem Roof Jack is a 12-inch non-adjustable kit designed for efficient venting of gas appliances. This kit includes an air inlet adjustable feature, enhancing ventilation and ensuring optimal performance. Constructed from durable materials, it is built to withstand various weather conditions, providing long-lasting reliability. The roof jack is compliant with industry standards, making it suitable for both residential and commercial applications. Its straightforward installation process allows for quick setup, ensuring effective venting for gas water heaters.