Music City Metals 94591 Porcelain Steel Heat Plate Replacement for Select Gas Grill Models by Nexgrill, North American Outdoors and Others Listing is for a single heat plate. 13.6875 x 4.25 inch porcelain steel heat plate Fits Duro 740-3003-BI; Nexgrill 720-0419, 720-0459; North American Outdoors 720-0419, 720-0459, BB10837A; River Grille GR1031-012965