Features The fireplace surround is sturdy and stylish. It will be an essential part of your home. Adjustable legs require cutting Note: Inner/filler panels are not included. Call us to order filler/inner panels before shipping. Indoor and outdoor use Grout is not included. We recommend Polyblend (brand). Sanded or non-sanded grout. Professional installation is required. Not a DIY product. The product is 500 pounds (around 226-230 kg). Installation and assembly instructions are on the specifications page. To cut the material use a diamond blade, 4"-7" in diameter. The firebox is not included Hollow inside. The thickness of the material is 1 inch. Available in GFRG/GFRC GFRG(Glass Fiber Gypsum)-for the inside, GFRC(Glass Fiber Reinforced Concrete)-for the outside.