Sassafras refractory log set. Ceramic beads are inside the Empire Slope Glaze Burners. The 24” set fits well in a 32” firebox. 24” gas logs. Comes with remote for variable (4 level) flame height control between 27,000 - 38,000 BTUs. This model is certified for installation in a vented fireplace. The standing pilot light must be turned on & off manually, using the black box. The black box can also turn on and off the gas logs. The battery operated remote lights and turns off the gas logs. This unit doesn't isn't used for heating, just ambiance. Required minimum rear width 23”, required minimum depth depth 14”, required minimum front width 30” and required minimum height 18”. All paperwork, installation instructions, etc. is included.