The Vevor fire pit ring is a heavy-duty square fire pit liner designed for backyard, patio, and camping use. Made from Q235 carbon steel with a black finish, it is built to resist heat, rust, and corrosion. Its 36 x 36 inch outer size and 30 x 30 inch inner opening provide ample space for firewood and airflow. The ring can be used on its own or integrated with bricks or stones for a custom in-ground or above-ground fire pit. Assembly is quick with the included hardware and wrench.