FLAMETTE Ceramic BBQ Grill Insert (11 1/2" x 16") Replaces Lava Rock, Reduces Gas Usage, Wire-Reinforced for Extra Strength Increases Life Of The Burner, Enhances The Flavor Of All Your Favorite Meats Creates Evenly Heated Cooking Area, No More Babysitting Your Gas Grill Easy To Install, Great For Gifts, One Year Warranty, MADE IN THE USA WITH PRIDE Available In 4 Popular Sizes To Fit Most Gas Grills: 11 1/2" x 16", 11 1 /2" x 18", 11 1/2" x 20", 11 1/2" x 22"