If you have a few extra bricks or landscape blocks laying around, the Sunnydaze Decor Square Fire Pit Rim/Liner can give them a purpose in life. Use this thick steel liner to create an above-ground or in-ground fire pit. The interior is 30 inches square and the steel is a full 2mm thick. The finish can withstand high temperatures and endures all weather conditions. The easy-to-assemble rim goes together in minutes.