"All inclusive HearthKit with everything needed for either Propane or Natural Gas. installation. Burner, Grate, Steps, Damper Clamp, Sand, Embers (Rock Wool),Vermiculitie, Lava Rock, Connector Kit. 18in Nominal Length. Includes both Sand for Natural Gas and Vermiculite for Propane - STANDARD!. . Heavy steel grate with steps - STANDARD!, 25% heavier than competitor"s. Heavy gauge coated steel burner - STANDARD!. Connector Kit for DIY installation - STANDARD!. Damper Clamp for safety - STANDARD!. 16x14x7in, 33Lb"