Meeco's Red Devil Lava Rock, 5 lb. is the solution to renew and replace the rocks in your gas log sets. These lava rocks are designed to enhance the appearance of both natural gas and liquid propane fueled units by decorating the firebox with a natural, istic look. Mostly black with hints of reddish-brown, they add depth and ity to your fireplace. Simply distribute the lava rocks generously over the sand or vermiculite in the firebox to restore the fresh, new look of your fireplace setup. This 5-pound package provides an ample amount to refresh your firebox effectively. Model Number: