The 28" Square Mammoth Smokeless Patio Fire Pit has a newly engineered, patent pending design that offers a highly efficient smokeless burn by improving airflow through the fire pit and drawing oxygen into the fire. It features a lift-out ash catch, accessible from the fire pit’s top, to simplify clean up. A wider bezel on top of the fire pit promotes a more efficient smokeless burn for you and your guests to enjoy. The innovative fire pit design burns firewood and/or wood pellets, generating a significant amount of heat for a great backyard bonfire with little to no smoke or embers. The tongue and grove design makes it easy to secure the sides together and assemble in ten minutes or less. The large burn chamber allows you to load 10-12 standard length firewood logs at a time for a better, longer burn. Included are two rectangular spark screens that lie side-by-side and an extra long screen lift for increased safety.