Grillmark Universal Porcelain Cooking Grid Large 21-7/8" X 13-1/4" W To 21-7/8" X 16-1/4" W Porcelai *Large *Adjusts from 21-7/8" x 13-1/4"W to 21-7/8" x 16- 1/4"W *Porcelain coated steel *Width expands to provide universal fit *Black