Warming Trends 50" x 10" Rectangular Burner Plate is a flat plate that spans the inside opening of a gas fire pit. A Warming Trends Crossfire burner mounts on the plate, and the plate holds the lava rock or fire glass that surrounds the burner.The plate is ordered to match the inside opening of the fire pit, not the burner. Measure the inside dimension of the opening before ordering. This plate is 50 inches by 10 inches. A rectangular plate is normally used with a linear Crossfire burner, and the long dimension of the plate should match the long dimension of the opening. Shape: rectangular Size: 50 inch x 10 inch Use: mounting surface for Warming Trends Crossfire burners Media: holds lava rock or fire glass around the burner Not sure whether this size matches your opening or your burner? Read the fire pit burner sizing guide before you order.