New OEM product from bbq factory: 92311(4-pack) BBQ Gas Grill Heat Plate Porcelain Steel Heat Shield for MCM, Grill King, Aussie, Charmglow, Brinkmann, Uniflame, Lowes Model Grills. Dimensions: 15 3/8" x 3 15/16", Material: Porcelain Steel. Cooks better! Lasts longer; Extend the life of your grill; Exact-fit parts; Durable porcelain steel construction.