Prism Hardscapes PH-415-4NG Tavola 6 Pewter Natural Gas. The larger Tavola 6 fire table provides an outdoor retreat of warmth and ambiance. Each table has been hand-crafted using our custom patina finishing process, guaranteeing a one-of-a-kind creation with subtle variation. The 38″ x 90″ table provides a beautiful and functional centerpiece for any backyard, patio or lounging area. The ambient heat provides plenty of warmth for multiple people. The 90,000 BTUs unit operates on either Propane Gas or Natural Gas.