Check the listing for details. Fire Pit Ring Liner-Steel 45" Round With Air Vents & Coller Support. Color: Black, Condition: New. Listed at 199.79 USD. A fire pit made of premium powder coated steel is incredibly strong and resistant to high heat and harsh weather.Fire Pit measuring 45 inches on the outside, 39 inches on the inside, and standing at a comfortable height of 10 inches,Air vents play a crucial role in ensuring a consistent and vigorous fire by promoting optimal airflow and oxygen circulation, thereby enhancing combustion efficiency.It is meant to reinforce the upper edge of the fire pit ring and provide additional strength to the entire structure.The square fire pit exhibits exceptional durability, featuring a bottomless design, rust-resistant construction, and a sleek black coating for long-lasting performance and aesthetic appeal.Easily assemble the square fire pit with just four simple pieces, all held together with high-quality screws and bolts for added durability.