gloss cast iron 2-pc cooking grid set, 18 ins. x 28.75 ins.; used with the following models: Ducane 3100, 3200, 4100, Affinity 3073101, Affinity 3100, Affinity 31421001, Affinity 3200, Affinity 3300, Affinity 3400, Affinity 4100, Affinity 4200, Affinity 4400; Grill Chef GC7550; Uniflame GBC850W, GBC850W-C, GBC850WNG-C