Robert H. Peterson's Select White Sand - CS-10. This silica sand is great to disperse your flame in your vented RealFyre gas log burner. The sand weighs down the gas which disperses the gas before rising up through the sand. The sand will help turn your single row of flame into a 6" deep rectangle of flame. Once the gas is dispersed it goes under the bottom of the gas logs which will heat them properly and you will feel the radiant heat off the vented Robert H. Peterson RealFyre gas logs. This 10lbs bag of select white sand will cover up to 24" burner pans.