Rock Wool+Lave Rock+Vermiculite for Gas logs (for 18-24 Inch Fireplace)

Rock Wool 6oz+Lava Rock 5LB +Vermiculite 12OZ | High quality high-temperature resistant rock wool+natural volcanic rock from the mining area+natural vermiculite | 3/8" - 3/4" Natural Stones Lava Rock | Can be equipped with an 18-24 inch fireplace | All raw materials come from nature ensuring no chemical additives are added